Air Quality Management Area 5 - Pollution in Greenstreet (A2)

POLLUTION DIARY
--- Latest Update 28th September 2020 ---

Changes to this page - use link to see data for 2019+ TO SEE OLD ANNUAL DATA USE THE LINK BELOWChanges to Data Table - see 2019 data using this link

  1. The Pollutants: I record four out of the five most toxic air pollutants associated with vehicles. I don't measure Ammonia (NH3).
  2. The Flow device: this measured as 90-95% accurate when compared with professional static monitors. Most of my data comes from one point close to the new Blind Company on Greenstreet/A2. The advantage of the Flow device is that it can measure "on the move". This allows me to create maps in real time in different stretches of road/lane around Greenstreet and show how pollution spreads a long way into our communities.
  3. Air Quality Indicators: These are based on EU, USA, and WHO thresholds for harmful pollutants over 1 hour, 24 hours, and a year.
  4. There are no known "safe levels" of PM2.5. This very fine form of pollution has many impacts, depending on the mix and size of particles (soot? soot binding to toxins? minerals? metals? organic compounds? ozone?)
  5. You will notice that pollution episodes can spread overnight.

AIR QUALITY INDICATOR (AQI) USED ON THIS SITE

Air Quality Indicator
(Bear in mind, there are no known lower safety levels for PM2.5)

A REPEAT OF LAST YEAR ... BOTH PM's are almost the same throughout November

Daily Changes in Pollution Levels
  Toxic Pollution Levels   Exceedances (time and duration)  
Date PM2.5 PM10 NO2 VOCs Daily
Average
High
(24 hours or more)
Very High +
(1 hour or more)
Graphs, Maps and Comments
You can visit Data between February 2019 and February 2020 using this Link
3rd Nov 20 26 2 8 MODERATE     2230-2330pm HIGH Peak. Pulsing throughout at Moderate levels.
4th Nov 31 37 17 5 MODERATE     1800-1830 VERY HIGH all PMs and NOx. Busy evening.
5th Nov 41 42 12 4 MODERATE     Pronounced pollution 0400-0500 and evening
6th Nov 43 42 4 7 MODERATE     Evening and early periods polluted most.
7th Nov 44 38 10 10 MODERATE     Yet again both PMs are peaking all day
8th Nov 46 43 1 15 MODERATE     Foul air quality again. Worst between midday to 0800 hrs.
9th Nov 27 30 0 19 MODERATE     1150am PM10 at VERY HIGH
10th Nov 27 29 1 15 MODERATE     0200 -0400 hhrs heaviest both PMs.

Comments: The traffic lights continue to create regular "sawtooth" graph lines with understandable pollution periods. With our and European economies suffering through Covid-19, background pollutants are reducing over last year.

NOTE: The static measurements that I have been making are taken along the A2 but West of the AQMA5.
Bear in mind that the measurements made by SBC have only relatively recently been relevant once they responded to Lynsted with Kingsdown Parish Council's criticism that SBC 'diffusion tubes' were sited unrealistically high above the heads of pedestrians.
SBC also fails to test for the more harmful PM2.5, PM10, and VOCs.
The appearance is that SBC would rather NOT know how much physical harm their decisions on planning have on our DAILY lives!


 

Daily Changes in Pollution Levels
  Toxic Pollution Levels   Exceedances (time and duration)  
Date PM2.5 PM10 NO2 VOCs Daily
Average
High
(24 hours or more)
Very High +
(1 hour or more)
Graphs, Maps and Comments
2020
1st January 44 35 11 10 MODERATE     1st January 2020 New Years  DayPM2.5 accounts for the shape and peaks/troughs of the whole graph.
2nd January 20 27 21 17 MODERATE     2nd January 2020Elevated levels across all four pollution fractions. NOx dominated between 7am-2pm; the sharp "High" peak at 6am was PM10 and PM2.5. The A2 drain-works did not materialise on this 'due date.' Rapid cycles in traffic impacted by flow through Bapchild - the worst of which may halt when Greenstreet roadworks come on stream.
3rd January 14 30 5 16 MODERATE     3rd January 2020Evenly spread polution levels - PM10 dominated.
4th January 11 26 3 13 MODERATE     4th January 2020PM10 dominated again.
5th January 13 27 1 12 MODERATE     5th January 2020 Pollution DiaryRapid peaks and troughs of PM10; also of PM2.5.
6th January 14 28 6 13 MODERATE     6th January 2020Rapid peaks and troughs of PM10; also of PM2.5.
LONDON ROAD (A2) - GREENSTREET - DRAIN RENEWAL (traffic pulsing through)
--- Avoidance Tactics in Evidence but Local Construction Traffic Heavier ---
7th January 16 38 2 14 MODERATE     7th January 2020 Pollution Diary AQMA5Rapid peaks and troughs in PM10 (and PM2.5)
8th January 15 31 1 16 MODERATE     8th January 2020 AQMA5Rapid peaks and troughs with parallel tracking of PM2.5 and PM10.
9th January 11 26 0 14 MODERATE     9th January 2020 Pollution DiaryPulses of PM10 dominating the measures of overall pollution. Reports of traffic in byways/'rat runs' starting to have an impact locally.
10th January 14 23 4 7 MODERATE     10th January 2020 Pollution AQMA5PM10 dominates until PM2.5 increases to equal levels from 4pm into the night. Pulses of traffic governed by new traffic lights at Station Road.
11th January 14 29 1 11 MODERATE     11th January 2020 AQMA5 PollutionPM10 dominates, PM2.5 parallel at lower levels. Pulses of traffic.
12th January 12 28 2 13 MODERATE     12th January 2020 Pollution Diary AQMA5PM10 dominates, PM2.5 tracks the same pattern. Graph highlights PM2.5. Single peak at midday - HIGH.
13th January 14 34 1 11 MODERATE     13th January 2020 Pollution DiaryPM10 dominates, PM2.5 tracks the same pattern. Graph highlights PM2.5. Pollution HIGH between 4am-9am - multiple peaks. PM10 is parallel to PM2.5.
14th January 15 37 1 14 MODERATE     14th January 2020 Pollution DiaryRapid pulses dominated by PM10, mirrored by PM2.5. HIGH from 7.45am to 10am.
15th January 13 30 2 12 MODERATE     15th January 2020 Pollution AQMA5Pulsing throughout, growing to HIGH in late evening.
16th January 14 29 1 11 MODERATE     16th January 2020 Pollution Diary AQMA5Pulsing dominated by PM10; PM2.5 in parallel peaks and troughs.
17th January 11 25 2 12 MODERATE     17th January 2020 Pollution DiaryPulsing throughout of both PMs. HIGH peak at 6pm.
18th January 17 30 5 5 MODERATE     18th January 2020 Pollution DiaryPulsing throughout of both PMs.
19th January 29 32 11 4 MODERATE     19th January 2020 Pollution AQMA5PM10 and PM2.5 pulsing alongside eachother throughout.
20th January 38 28 14 5 MODERATE     20th January 2020 pollution aqma5PM2.5 dominates all peaks (PM10 higher between 1pm-6pm.
21st January 37 29 18 5 MODERATE     21st January 2020 pollution diary aqma5PM2.5 dominates all peaks (PM10 higher between 1pm-6pm.
22nd January 46 57 29 10 HIGH EXCEEDANCEVery High Pollution Jogging   22nd January 2020 High Pollution ExceedanceBoth PM2.5 and PM10 were high into the evening in multiple peaks. NOx was also higher than usual. Overall, a bad day for breathing!
23rd January 37 48 3 13 MODERATE     23rd January 2020 marginally highOnly just under "HIGH" for PM10 in particular overnight into early morning.
24th January 26 24 2 13 MODERATE     24th January 2020 Pollution DiaryUsual 'saw-toothed' profile. This reflects the continuation of traffic-lights on the A2.
25th January 40 45 1 11 MODERATE     25th January 2020 Pollution DiaryThroughout the day there were serious peaks in Particulate Matter into the evening again.
26th January 22 32 4 16 MODERATE     26th January 2020 Pollution Diary AQMA5PM10 provides the peaks around midday. Unhealthy levels of PM2.5.
27th January 17 38 1 15 MODERATE     27th January 2020 Pollution DiaryPM2.5 peaked in the evening after 8pm.
28th January 12 29 1 12 MODERATE     28th January 2020 Polution Diary AQMA5 on A2PM10 dominated with a marked peak in the early evening.
29th January 12 30 9 11 MODERATE     29th January 2020 Pollution DIary AQMA5 A2PM10 dominated against. Interestingly NOx was fairly high in the afternoon.
30th January 13 28 6 14 MODERATE     30th January 2020 Pollution Diary AQMA5 A2PM10 dominated again.
31st January 7 21 1 16 MODERATE     31st January 2020 Pollution Diary AQMA5 A2Very nearly a good day. Low pressure descended and wind direction changed.
FEBRUARY 2020
1st February 14 33 0 14 MODERATE     1st February 2020 pollution diaryPM2.5 shadowed PM10, including the evening peak
2nd February 17 39 3 14 MODERATE     2nd February 2020 Pollution DiaryPM2.5 shadowed PM10.
3rd February 15 34 3 11 MODERATE     3rd February 2020 Pollution DiaryPM2.5 shadowed PM10.
4th February 13 31 2 7 MODERATE     4th February 2020 Pollution DiaryPM2.5 shadowed PM10.
5th February 20 37 2 7 MODERATE     5th February 2020 Pollution DiaryPM2.5 shadowed PM10.
6th February 31 33 19 6 MODERATE     6th February Pollution DiaryRun at midday was very worrying! 54/90/37/3 figures meaning BOTH PM fractions were "High" and "Very High" Pollution. NOx was higher throughout the afternoon and evening.
7th February 37 29 12 7 MODERATE     7th February 2020 pollution DiaryPM2.5 was EQUAL to PM10 until midday but shadowed PM10 therafter.
8th February 18 29 4 17 MODERATE     8th February 2020 Pollution diaryRun at 11am showing spread of pollutants. PM2.5 shadowed PM10 at spot station..
9th February 17 33 0 17 MODERATE     9th February 2020 Pollution DiaryPM2.5 shaddowed PM10.
10th February 12 28 1 13 MODERATE     10th February 2020 PollutionLight Rain (10.1mm). Wind 41-37km/h (gusts to 66km/h) - WSW-W
11th February 14 30 2 11 MODERATE     11th February 2020 Pollution DiaryPartly cloudy (0.6mm). Wind 36km/h (gusts to 62km/h) - Westerly. Jogging Map.
12th February 16 29 1 10 MODERATE     12th February 2020 Pollution Diary12/2: Overcast. Wind 30-15km/h (gusts to 50km/h) - WSW-W-SW. PM10 dominant.
13th February 14 28 2 12 MODERATE     13th February 2020 Pollution DiaryModerate Rain (21.30mm). Wind 19-51-19km/h (gusts to 77km/h) - S-SW-WNW. PM2.5 peak after midnight.
14th February 20 38 5 12 MODERATE     14th February 2020 Pollution DiaryOvercast. Wind 17-28km/h (gusts to 30-49km/h) - WNW-SSW. Run via Lower Lane HIGH Pollution. Most polluted throughout afternoon. PM2.5 & PM10 mirrored throughout. Jogging map.
15th February 14 29 0 18 MODERATE     15th February 2020 Pollution Diary.Light Rain (2.80mm). Wind 26-60km/h (gusts to 45-98km/h) - SSW-SW
16th February 10 24 0 16 MODERATE     16th February 2020 Pollution DiaryHeavy Rain (32.60mm). Wind 48-62-33km/h (gusts 81-103-59km/h) - South Westerly. PM2.5 & PM10 mirrored throughout.
17th February 17 37 1 12 MODERATE   EXCEEDANCE
17.50-18.55
.Very High Pollution Jogging
17th February 2020 Pollution DiaryLight Showers (0.80mm). Wind 29-39-30km/h (gusts 53-60-48km/h) - SW-WSW. The exceedance was of PM10 (PM2.5 peak too).
18th Fabruary 12 26 1 11 MODERATE     18th February 2020 Pollution DiaryLight Drizzle (1.10mm). Wind 29-34-28km/h (gusts to 46-50-43km/h) - WSW. PM10 dominating; PM2.5 mirroring.
19th February 15 31 2 10 MODERATE     19th February 2020 Pollution DiaryLight Drizzle (1.5mm). Wind 24-27km/h (gusts to 42-45km/h) - WNW-SW. Run on Lynsted Lane and Cellar Hill - Moderately higher pollution South of A2. Jogging Map.
20th February 12 28 1 12 MODERATE     20th February 2020 Pollution MapModerate Rain at Times (5.60mm). Wind 27-51-23km/h (gusts to 47-69-41km/h) - SW-W.
21st February 15 34 1 11 MODERATE     21st February 2020 Pollution DiaryOvercast. Wind 23-42km/h (gusts 43-68km/h) - W-SW. Pulsing traffic as usual ALL DAY (as usual).
22nd February 14 32 0 13 MODERATE     22nd February 2020 Pollution DiaryPatchy Rain Possible (0.30mm). Wind 41-28km/h (gusts to 67-75-47km/h) - SW-W-WSW.
23rd February 11 25 2 12 MODERATE     23rd February 2020 Pollution DiaryLight Drizzle (4.20mm). Wind 24-50-10km/h (gusts 41-89-16km/h) - WSW-W-NW. HIGHER pollution early morning.
24th February 13 25 1 12 MODERATE     24th February 2020 Pollution DiaryLight Rain (6.10mm). Wind 7-47-30km/h (gusts 11-71-49km/h) - S-SW-W. 6pm peak significant PM2.5 and PM10.
25th February 12 23 3 11 MODERATE     25th February 2020 Pollution DiaryLight Sleet Showers (1.90mm). Wind 23-32 (gusts 39-50km/h) - W-WSW-W. The 6pm peak was dominated by PM2.5.
26th February 13 28 4 6 MODERATE     26th February 2020 Pollution DiaryPatchy Rain Possible (0.50mm). Wind 32-18 (gusts 48-31km/h) - W-WNW-WSW. PM2.5 highest between 6pm and 9pm.
27th February 15 25 1 5 MODERATE     27th February 2020 Pollution DiaryHeavy Snow/Rain (14.40mm). Wind 17-33-18 (gusts 28-44-36km/h) - WSW-S-NNW-WNW. PM2.5 highest early morning and late evening.
28th February 18 29 14 11 MODERATE     28th February 2020 Pollution DiaryModerate Rain (12.20mm). Wind 16-43-37km/h (gusts 31-63-62km/h) - W-S-SW. Midday to 4pm peak is NOx.
29th February 17 42 10 17 MODERATE     29th February 2020 Pollution DiaryModerate Rain (11.10mm). Wind 40-47-36km/h (gusts 64-73-58km/h) - SSW-WSW-SW. PM10 dominant.
MARCH 2020
1st March 14 30 5 12 MODERATE     1st March 2020 Pollution DiaryLight Rain Showers (0.20mm). Wind 35-30-18km/h (gusts 57-36-32km/h) - SW-WSW-SW. PM2.5 Peak 9pm-11pm
2nd March 15 30 5 9 MODERATE     2nd March 2020 Pollution DiaryPatchy Rain (1.90mm). Wind 17-24-20km/h (gusts 28-35km/h) - S-NNW-W.
3rd March 14 32 12 10 MODERATE     3rd March 2020 Pollution DiaryLight Drizzle (0.70mm). Wind 19-22-14km/h (gusts 35-30-26km/h) - WSW-W. NOx peaks midday to 5pm! Run around Teynham Moderate and High patches.
4th March 20 29 22 10 MODERATE     4th March 2020 Pollution MapLight Rain Shower (3.50mm). Wind 15-8-17km/h (gusts 28-13-27km/h) - W-SSW-ESE. PM2.5 Peaks at 6am, midday and 4-6pm!
5th March 18 29 2 11 MODERATE     5th March 2020 Pollution MapHeavy Rain (26.70mm). Wind 7-39km/h (gusts 11-55km/h) - E-NE-N.
6th March 19 29 14 14 MODERATE     6th March 2020 Pollution MapPartly Cloudy (1.60mm). Wind 30-18-6km/h (gusts 42-22-12km/h) - NNW-NW-WNW.
7th March 5 25 4 10 MODERATE   Near exceedance 7th March 2020 Pollution DiaryPatchy Rain Possible (0.10mm). Wind 10-27km/h (gusts 18-49km/h) - WSW-SW.. VOCs increased during the day but PM10 massively peaked to near exceedance from 17.40-18.40pm.
8th March 4 14 6 25 MODERATE     8th March 2020 Pollution DiaryLight Rain Shower (2.90mm). Wind 35-30-20km/h (gusts 58-44-35km/h) - SSW-SW-WSW. Unusually dominated by VOCs without peaks; Peaks are PM10.
9th March 4 15 2 20 MODERATE     9th March 2020 Pollution DiaryPatchy Rain Possible (2.40mm). Wind 22-26-38km/h (gusts 37-36-62km/h) - WSW-W-SSW. Unusually dominated by VOCs without peaks; Peaks are PM10.
10th March 5 13 6 21 MODERATE     10th March 2020 Pollution DiaryLight Drizzle (8.40mm). Wind 37-27-36km/h (gusts 62-46-64km/h) - SW-WSW. Unusually dominated by VOCs without peaks; The peak was PM10 (VERY HIGH 18.45-19.00). Running along Lower Road 54 vehicles passed - before roadworks the figure was 5 or 6 vehicles in the same off-peak periods.
11th March 4 10 4 18 LOWLow Pollution - result!     11th March 2020 Pollution DiaryLight Rain Showers (3.50mm). Wind 38-30-36km/h (gusts 62-42-56km/h) - SW-WSW.
12th March 5 17 1 14 LOWLow Pollution - result!     12th March 2020 Pollution DiaryPatchy Rain Possible (2.00mm). Wind 34km/h (gusts 61-57km/h) - WSW. Running along Lower Road 63 vehicles passed - before roadworks the figure was 5 or 6 vehicles in the same off-peak periods.
13th March 5 24 8 11 MODERATE     13th March 2020 Pollution DiaryLight Rain Shower (0.60mm). Wind 39-13km/h (62-25km/h) - WSW - SW.
14th March 16 27 0 15 MODERATE     14th March 2020 Pollution DiaryLight Rain Shower (6.80mm). Wind 9-23km/h (gusts 16-39km/h) - SSW-SW..Graph shows how PM2.5 often shadows PM10 throughout the day.
15th March 13 26 1 15 MODERATE     15th March 2020 Pollution DiaryLight Rain Shower (1.40mm). Wind 24-33-3km/h (gusts 42-48-4km/h) - SW-SSW-ENE. Jogging Map.
16th March 17 26 3 10 MODERATE     16th March 2020 Pollution DiaryPartly Cloudy (1.20mm). Wind 4-11km/h (gusts 6-21km/h) - NW-WSW.
17th March 19 30 1 15 MODERATE     17th March 2020 Pollution DiaryOvercast (dry). Wind 11-22km/h (gusts 22-39km/h) - WSW-SW. Jogging Map
18th March 16 24 2 16 MODERATE     18th March 2020 Pollution DiaryOvercast (dry). Wind 23-13km/h (gusts 42-25km/h) - SW.
19th March 17 19 2 9 LOWLow Pollution - result!     19th March 2020 Pollution DiaryLow pollution is encouraging for walkers and runners getting in their daily exercise.
20th March 18 39 1 8 MODERATE     20th March 2020 Pollution Diary
21st March 17 32 4 6 MODERATE     21st March 2020 Pollution Diary
22nd March 18 28 20 7 MODERATE     22nd March 2020 Pollution DiarySunday. NOx has started to feature as a 'bulge' that shifts day-to-day - I am assuming that this reflects the periods when all the lorries trying to get through the traffic lights. But PM10 still dominates throughout the day..
23rd March 26 31 26 8 MODERATE     23rd March 2020 Pollution DiaryNOx afternoon bulge when traffic is slow to get through the traffic lights.
24th March 25 24 24 12 MODERATE     24th March 2020 Pollution DiaryNOx bulge throughout the daylight hours.
25th March 27 24 17 10 MODERATE     25th March 2020 Pollution DiaryNOx bulge 8am-2pm. PM2.5 dominated though!
26th March 38 32 18 11 MODERATE     26th March 2020 Pollution DiaryBad day. NOx bulge all day in 'normal' working hours.
27th March 38 38 18 15 MODERATE     27th March 2020 Pollution DiaryBad day. NOx bulge during working hours.
28th March 25 41 3 13 MODERATE     28th March 2020 Pollution DiarySaturday and no NOx bulge! PM2.5 has been higher for a week now.
29th March 18 42 13 8 MODERATE     29th March 2020 Pollution DiarySunday NOx bulge from midday to 9pm. Curious.
30th March 15 31 9 11 MODERATE     30th March 2020 Pollution DiaryMidday peak for NOx returns!
31st March 15 31 10 13 MODERATE     31st March 2020 Pollution DiaryWith multiple peaks spread across the day may suggest a change in traffic as Docwra take down their barriers ready to move them down towards the West end of Greenstreet.
APRIL 2020
1st April 18 24 16 13 MODERATE     1st April 2020 Pollution DiaryNOx 'bulge' continues to feature.
2nd April 14 23 0 21 MODERATE     2nd April 2020 Pollution DiaryVOC 'bulge'.
3rd April 21 42 2 19 MODERATE     3rd April 2020 Pollution DiaryNotice how PM2.5 and PM10 mirror each other.
4th April 23 28 2 18 MODERATE     4th April 2020 Pollution DiaryPM2.5 and PM10 ran 'neck and neck' but there were no sustained bulges or peaks. A confirmation that people stayed at home on this sunny Saturday.
5th April 17 22 4 19 MODERATE     5th April 2020 Pollution DiaryMinor peaks at usual travel times.
6th April 12 23 2 22 MODERATE     6th April 2020 Pollution DiaryCurious peaks. We did seem to have more blockages than usual with the lower levels of traffic?
7th April 20 37 4 13 MODERATE     7th April 2020 Pollution DiaryThe workmen repairing the water main were outside our home on 7th and 8th. So the higher figures may have been influenced. Although that doesn't account for 'out of hours' peaks. So, not the whole story!
8th April 42 41 1 13 MODERATE     8th April 2020 Pollution DiaryAs above.
9th April 50 52 2 13 HIGH EXCEEDANCE EXCEEDANCE
07.33 - 08.47
.Very High Pollution Jogging
9th April 2020 Pollution DiaryTHIS LOOKS TERRIBLE! BUT ... the VERY HIGH peak occurred when the workmen were using machinery within two metres of the monitor - so, all I can say is that only we were experiencing harm! The afternoon quietened down after the workmen finished and closed their operations down for Easter.
10th April 33 36 1 12 MODERATE     10th April 2020 Pollution DiaryStill not good, but better than when workmen and their generators are not next to you! High pressure systems also may be trapping particles near ground level to add to our woes. Similar overall shape of the graph = quieter afternoon.
11th April 18 24 1 14 MODERATE     11th April 2020 Pollution DiaryApart from the late-morning peak, the pollution has been pretty tame again. The A2 has been quieter. PM2.5 was a bit worrying (coloured line).
12th April 17 21 2 17 MODERATE     12th April 2020 Pollution DiaryThere was a modest increase in traffic at around 9pm that pushed this graph into MODERATE rather than LOW.
13th April 17 40 6 6 MODERATE     13th April 2020 Easter breakPM10 dominated. This level of pollution is worrying but not sure why?? The morning was worse than the rest of the day - deliveries getting ready for Tuesday perhaps?
14th April 15 28 1 5 MODERATE     14th April 2020 Pollution DiaryPM2.5 peaked after 8pm but otherwise this graph shows PM10 as the dominant particulate size.
15th April 27 37 28 8 MODERATE     15th April 2020 Pollution DiaryThe 'block' of peaks throughout the day-time was dominated by NOx - picked out in th graph. Basically a toxic mix of all PMs and NOx. Background pollution for Swale was estimated as AQI 40 - our peak was in PM10 but also worrying levels of PM2.5 and NOx! Not a good day for walking!
16th April 42 41 3 13 MODERATE     16th April 2020 Pollution DiaryEven without this evidence, my impression has been that more traffic has passed us this day - more cars. PM2.5 and PM10 tracked each other throughout the day. Background pollution for Swale was estimated as AQI 37 - so our higher roadside pollution is definitively traffic-related.
17th April 19 42 1 13 MODERATE     17th April 2020 Pollution DiaryI confess I thought traffic was heavier during our daily walk again. Quite what, if anything, this means is open to conjecture. Background pollution for Swale was estimated as AQI 39 - so our higher roadside pollution is definitively traffic-related.
18th April 21 50 2 13 HIGH EXCEEDANCEVery High Pollution Jogging   18th April 2020 Pollution DiaryA score of "50" (PM10) is technically an exceedance but it is at the margin. Nevertheless, pollution was significant throughout the day - enough to be toxic over 24-hours. Background pollution for Swale was estimated as AQI 36 - so our higher roadside pollution is definitively traffic-related.
19th April 18 43 1 12 MODERATE     19th April 2020 Pollution DiaryPM10 figures continue to dominate with PM2.5 continuing at a troubling level..
20th April 18 47 1 12 MODERATE     20th April 2020 Pollution DiaryVery much dominated by PM10. PM2.5 was mirroring the graph line but significantly lower. However there was a bulge in the evening - not sure why? Also at lunchtime?
21st April 18 42 0 12 MODERATE     21st April 2020 Pollution DiaryVery much dominated by PM10. PM2.5 was mirroring the graph line but significantly lower. The 'ripple' all day reflects the traffic lights regulating the flow.
22nd April 21 33 1 12 MODERATE     22nd April 2020 Pollution DiaryVery much dominated by PM10. PM2.5 was mirroring the graph line but significantly lower.
23rd April 26 29 1 13 MODERATE     23rd April 2020 Pollution DiaryAs above but also note that the normal peaks and troughs when there is no Covid-19 are not evident - this does suggest that most people are still staying at home.
24th April 23 27 2 12 MODERATE     24th April 2020 Pollution DiaryAs above but note how pollution declined all day. The higher overnight/morning figures were shared equally between PM2.5 and PM10.
25th April 15 31 1 10 MODERATE     Saturday. PM10 Strongly dominant. Bulge in traffic throughout the morning, lower in pm.
26th April 14 22 1 12 MODERATE     26th April 2020 Pollution DiarySunday. Bulge through the middle of the day (9am-2pm)
27th April 18 21 2 15 LOW/ MODERATE     27th April PollutionA fraction short of GOOD. VOC high throughout daylight hours.
28th April 14 29 1 12 MODERATE     28th April 2020 PollutionPM10 Strongly dominant.
29th April 12 26 0 19 MODERATE     29th April 2020 PollutionPM10 Strongly dominant. PM2.5 peaks 11am and 11pm!
30th April 10 25 1 17 MODERATE     30th April 2020 PollutionPM10 Dominant; PM2.5 tracking same pattern.
MAY 2020
1st May 10 23 2 14 MODERATE     1st May 2020 PollutionPM10 Dominant; PM2.5 tracking same pattern.
2nd May 8 21 1 13 LOW/ MODERATE     2nd May 2020 PollutionSaturday. A fraction short of GOOD. VOC high throughout daylight hours.
3rd May 9 21 1 12 LOW/ MODERATE     3rd May 2020 PollutionSunday. A fraction short of GOOD. VOC high throughout daylight hours.
4th May 11 23 3 11 MODERATE     4th May 2020 PollutionUsual 'sawtooth' throught the day.
5th May 11 28 1 9 MODERATE     5th May 2020 PollutionUsual 'sawtooth' throught the day.
6th May 15 30 1 11 MODERATE     6th May 2020 PollutionSome sharp spikes at the "high" end of pollution levels.
7th May 14 24 1 18 MODERATE     7th May 2020 PollutionPollution (PM10) upward-itrend in afternoon/evening.
8th May 16 25 2 16 MODERATE     8th May 2020 PollutionSignficant traffic pollution from 7pm to 11pm.
9th May 29 36 3 14 MODERATE     9th May 2020 PollutionSaturday: Higher pollution from midday to 7pm; notably PM2.5 levels remained higher throughout the day
10th May 22 27 2 11 MODERATE     10th May 2020 Pollution levelsSunday. Notable peaks all afternoon. drivers going home?.
11th May 12 32 3 5 MODERATE     11th May 2020 Pollution
12th May 12 29 3 12 MODERATE     12th May 2020 Pollution
13th May 11 26 3 9 MODERATE     13th May 2020 Pollution
14th May 10 25 10 8 MODERATE     14th May 2020 Pollution
15th May 10 23 2 13 MODERATE     15th May 2020 Pollution
16th May 11 21 1 15 LOW/ MODERATE     16th May 2020 PollutionSaturday.
17th May 11 24 0 22 MODERATE     17th May 2020 PollutionSunday. The midday spike was VOC!
18th May 12 23 0 20 MODERATE     18th May 2020 PollutionPM10 throughout, including early evening spikes.
19th May 10 21 1 21 LOW/ MODERATE     19th May 2020 PollutionPM10 and PM2.5 mirrored eachother.
20th May 8 18 2 19 LOWLow Pollution - result!     20th May 2020 |PollutionLOW Pollution coincides with roadworks/pavement cutting moves west of our sensors.
21st May 10 19 1 17 LOWLow Pollution - result!     21st May 2020 PollutionLOW Pollution coincides with roadworks/pavement cutting moves west of our sensors.

From 22nd May I will be using the latest Flow Device (FLOW 2), with which I have been shadowing the FLOW 1 sensor for several weeks and they are 'in step' with each other. The sensitivity/accuracy of the FLOW 2 has the same profile as the FLOW 1.

22nd May 5 25 3 16 MODERATE     22nd May 2020 Pollution DiaryThe spikey evening is principally PM10
23rd May 7 44 3 8 MODERATE     23rd May 2020 Pollution DiarySaturday: Spikes of PM10 briefly exceeded the "VERY HIGH" level. But the average is 44.
24th May 7 34 23 8 MODERATE     24th May 2020 Pollution DiarySunday: It is worrying to see elevated levels of NOx from 8am. People out and about?
25th May 5 23 16 8 MODERATE     25th May 2020 Pollution DiaryDampened down particulates. Still a worrying mix.
26th May 5 19 15 10 LOWLow Pollution - result!     26th May 2020 Pollution DiaryThe measurement is right 'on the line', but is nearer to "safe" for us - just outside the AQMA5 zone.
27th May 4 15 8 8 LOWLow Pollution - result!     27th May 2020 Pollution DiaryMuch more emphatically a GOOD DAY!
28th May 6 35 8 4 MODERATE     28th May 2020 Pollution DiaryRoadworks in full swing and heavy traffic congested. Two 'humps' of PM2 - 8am-10am and 8pm-9pm are buried below this graph line.
29th May 6 38 7 7 MODERATE     29th May 2020 Pollution DiaryThe traffic was bad throughout the working day, which explains the profile. A mixture of more cars than usual and the traffic lights.
30th May 5 25 13 12 MODERATE   EXCEEDANCE
01.10 - 02.20
.Very High Pollution Jogging
30th May 2020 Pollution DiarySaturday: The daily average was 25; but from 1.20am-2.20am there was an EXCEEDANCE at levels that are harmful if breathed for more than one hour! The two 'humps' in the middle of the day and evening are 'new normal'.
31st May 4 15 14 14 LOWLow Pollution - result!     Sunday: What a difference a day makes! This proves just how useless SBC diffusion tubes are - they average our over days and weeks, when the good and the bad happen in hours and days.
JUNE 2020
1st June 4 15 11 13 LOWLow Pollution - result!     1st |June 2020 Pollution DiaryAnother good day. BUT ... the Traffic Lights and workmen moved West. It will be interesting to see if there is an effect?
2nd June 4 16 23 14 LOWLow Pollution - result!     2nd June 2020 Pollution Diary I spoke too soon! NOx reared its ugly head again through the normal working day. The 03.00am spike was PM10.
3rd June 4 11 11 13 LOWLow Pollution - result!     3rd June 2020 Pollution DiaryNo wonder that my jog along the Lower Road was easier! Well, relatively easier. The pollutants PM10, NOx and VOCs were roughly eaual all day.
4th June 4 11 6 10 LOWLow Pollution - result!     4th June 2020 Pollution DiaryAnother good day! There was an afternoon 'hump' of NOx.
5th June 4 12 7 15 LOWLow Pollution - result!     5th June 2020 Pollutio DiaryThe midday spike was midday when the traffic came to something of a halt. It is interesting how suddenly that effect kicks in.
6th June 5 16 4 15 LOWLow Pollution - result!     6th June 2020 Pollution DiarySaturday: All the spikes were PM10, with a massive (short) spike just after midnight? I can only speculate someone idling outside our house?
7th June 4 9 0 10 DUFF DATA     7th June 2020 Pollution DiaryIncomplete data. The sensor ran out of battery power.
8th June 5 21 5 13 MODERATE     8th June 2020 Pollution DiaryOn the margin with Low. But, you will notice the massive peaks in PM10 from 3.30 to 6.30am. I assume there were problems on the M2?
9th June 4 14 14 13 LOWLow Pollution - result!     9th June 2020 Pollution DiaryNOx built up during the day but not more than MODERATE. The spikes are PM10.
10th June 4 18 5 14 LOWLow Pollution - result!     10th June 2020 Pollution DiarySpikes went HIGH for PM10. But daily average is nicely LOW.
11th June 5 22 2 12 MODERATE     11th June 2020 Pollution DiaryDominated by spikes of PM10 that you would expect with traffic lights - nothing new.
12th June 4 18 9 14 LOWLow Pollution - result!     12th June 2020 Pollution DiaryDominated by spikes of PM10 that you would expect with traffic lights - nothing new.
13th June 4 14 13 16 LOWLow Pollution - result!     13th June 2020 Pollution DiarySaturday: VERY unusual shape to the PM10 pollution. 3am spike was there, 7.30 peak as traffic got stuck ... and then nothing much at all! It was unexpectedly quiet. Great!
14th June 4 11 9 17 LOWLow Pollution - result!     14th June 2020 Pollutio DiarySunday: Curiously, VOC's comprise the 'bulk' of pollution - peaks are PM10. Easing 'lock down' seems to coincide with people avoiding driving this weekend?
15th June 4 12 9 16 LOWLow Pollution - result!     15th June 2020 Pollution DiaryPeaks and troughs can be seen as traffic-lights at work. VOCs dominate
16th June 4 10 8 16 LOWLow Pollution - result!     16th June 2020 Pollution DiaryPeaks and troughs can be seen as traffic-lights at work.VOCs dominate
17th June 4 10 7 13 LOWLow Pollution - result!     17th June 2020 Pollution DiaryPeaks and troughs can be seen as traffic-lights at work.VOCs dominate
18th June 4 12 1 13 LOWLow Pollution - result!     18th June 2020 Pollution DiaryPeaks and troughs can be seen as traffic-lights at work.VOCs dominate
19th June 4 11 5 13 LOWLow Pollution - result!     19th June 2020 Pollution DiaryThe taller 'lump' is still VOCs.
20th June 4 12 9 14 LOWLow Pollution - result!     20th June 2020 Pollution DiarySaturday. The sharp peak is PM10. PM10 is the usual "swa-toothed" pattern that is resulting from traffic lights.
21st June 4 16 5 12 LOWLow Pollution - result!     21st June 2020 Pollution DiarySunday. The levels of pollution grew throughout the evening. THe road outside our house was very busy.
22nd June 5 20 6 13 MODERATE     22nd June 2020 Pollution DiaryRight on the cusp, so still quite low even if technically MODERATE. The real 'damage' was done through the morning peaks.
23rd June 5 20 6 13 MODERATE     23rd June 2020 Pollution DiaryAlmost exactly the same as yesterday in the pattern of the graph. We did have periods when the road was surprisingly busy at that time - traffic slow (and noisy - radios).
24th June 4 15 3 11 LOWLow Pollution - result!     24th June 2020 PollutionSignificantly in the "Low" zone! OK, we have to thank the roadworks for persuading drivers to find alternatives - except that we do see large waves very early in the morning around 3 a.m.
25th June 4 13 2 12 LOWLow Pollution - result!     25th June 2020 PollutionGood spread of Low pollution averaged over the day but much higher in the small hours with large lorries thundering through - until held up by lights and they just keep thrumming engines.
26th June 5 19 0 19 LOWLow Pollution - result!     26th June 2020 PollutionAt the cusp between Low/Moderate. Afternoon and evening traffic reached dangerous peaks of "Very High" several times..
27th June 4 15 1 12 LOWLow Pollution - result!     27th June 2020 pollutionAll good except from mid-afternoon to early evening peaks.
28th June 5 18 4 12 LOWLow Pollution - result!     28th June 2020 pollutionThe peaks are becoming familiar. Sadly, early mornings are here to stay as the A2 becomes a run through to our towns and Medway towns.
29th June 5 18 4 12 LOWLow Pollution - result!     29th June 2020Ditto.
30th June 4 16 1 13 LOWLow Pollution - result!     30th June 2020 pollutionAgain, the average for 24 hours is good, but midnight to midday was horrible.
JULY 2020
1st July 4 14 9 14 LOWLow Pollution - result!     1st July 2020 pollution graphGood. Less so in the middle of the day
2nd July 6 21 5 14 MODERATE     2nd July 2020 PollutionOK. I am fed up with disturbed nights and dangerous spikes in pollution as heavy goods vehicles career through in the early hours. Perhaps the M2 is being worked on?
3rd July 4 14 5 12 LOWLow Pollution - result!     3rd July 2020In contrast to yesterday - a very good day throughout! Who knew!?
4th July 4 13 3 12 LOWLow Pollution - result!     4th July 2020 pollutionSurprising peak at 10am. But otherwise excellent!
5th July 6 16 3 13 LOWLow Pollution - result!     5th July 2020 pollutionPeak at 6pm. Otherwise pretty excellent! Regional background pollution was low too.
6th July 6 27 12 10 MODERATE     6th July pollutionVery High extended peak towards midnight. PM10 with higher NOx measurement.
7th July 7 21 8 13 MODERATE     7th July 2020Early morning pollution peaks yet again. Not sure of M2 works in hand?
8th July 4 14 2 14 LOWLow Pollution - result!     8th July 2020 PollutionRegional pollution was low as well. Very early morning peak/midnight-1am..
9th July 4 14 4 12 LOWLow Pollution - result!     9th July 2020 pollutionPeaky.
10th July 4 15 3 8 LOWLow Pollution - result!     10th July 2020 pollutionAnother exmaple where the 24-hour measurement misses horribly high pollution peaks.
11th July 4 15 11 9 LOWLow Pollution - result!     11th July 2020 pollutionAnother good day with some high peaks.
12th July 5 17 15 11 LOWLow Pollution - result!     12th July 2020 PollutionAgain, once traffic builds up even modestly, a peak of surging pollution bites.
13th July 5 21 7 15 MODERATE     13th July 2020 pollutionSeveral High peaks throughout day and night.
14th July 5 17 2 12 LOWLow Pollution - result!     14th July 2020 pollutionDreadful middy peaks as traffic came to a grinding queue.
15th July 4 13 5 14 LOWLow Pollution - result!     15th July 2020 PollutionNo serious peaks although early morning is still very busy to 3am.
16th July 4 11 5 13 LOWLow Pollution - result!     16th July 2020 PollutionClean day - OK PM doesn't have a 'safe' lower limit.
17th July 5 15 5 16 LOWLow Pollution - result!     17th July 2020 PollutionToday's problems took place from 7pm to 8.30pm. Otherwise fine.
18th July 5 14 1 15 LOWLow Pollution - result!     18th July 2020 PollutionFairly calm low pollution.
19th July 4 12 1 10 LOWLow Pollution - result!     19th July 2020 pollutionA good day all round.
20th July 5 19 14 9 LOWLow Pollution - result!     20th July 2020 PollutionMarginal. Peaks at usual times. Overnight does appear to be following a pattern - including loss of sleep.
21st July 5 23 14 10 MODERATE     21st July 2020 PollutionSo much for sleep! Heavy pollution too - anyone sleeping with windows open gets this regularly fed to them.
22nd July 4 13 7 15 LOWLow Pollution - result!     22nd July 2020 PollutionPretty well OK. Low pollution.
23rd July 5 17 3 16 LOWLow Pollution - result!     23rd July 2020 PollutionThe 24-hour numbers look OK ... but take a look at the 9am spike! Agricultural movements.
24th July 4 13 2 15 LOWLow Pollution - result!     24th July 2020 PollutionA good day and night.
25th July 4 12 0 12 LOWLow Pollution - result!     25th July 2020 PollutionExcellent measurements. Lowish spikes.
26th July 4 15 7 10 LOWLow Pollution - result!     26th July 2020 PollutionApart from early morning lorry traffic, pollution was OK!
27th July 5 15 2 13 LOWLow Pollution - result!     27th July 2020 PollutionShort-lived peak of traffic congestion at 11am onwards.
28th July 4 14 8 12 LOWLow Pollution - result!     28th July 2020 PollutionPeaks at expected times.
29th July 4 16 8 12 LOWLow Pollution - result!     29th July 2020 PollutionHeavier than usua traffic under current roadworks conditions during middle of the day
30th July 6 21 5 14 MODERATE     30th July 2020 PollutionAverage for 24 hours was marginal but the heavy goods and others travelling through AQMA5 all night was appalling - regularly High Pollution.
31st July 4 11 2 33       31st July 2020 pollutionVOC strangely on the high side of Moderate.
AUGUST 2020
1st August 8 20 1 17       1st August 2020 - unstable power leadData Interruption p.m. Power Connection Lost
2nd August 0 0 8 16       Public Data - Background estimates for our area. No Flow data
3rd August 9 8 9 19       Public Data - Background estimates for our area. No Flow data
4th August 8 20 5 10       4th August 2020 with data interruptionData Interruption p.m.
5th August 5 18 4 12       5th August 2020 data lossSpikes of heavy pollution. Data Loss in p.m.
6th August 10 10 10 22       Public Data - Background estimates for our area. No Flow data
7th August 8 19 1 13 LOWLow Pollution - result!     7th August pollution - power lead changedNormal Service resumed! Peaks throughout the day reflects flow of traffic.
8th August 17 22 0 13 MODERATE     8th August 2020 pollutionMid afternoon saw prolonged congestion and heavy traffic levels.
9th August 5 28 0 11 MODERATE     9th August 2020 POllution levelsPollution levels rose markedly this day. Multiple peaks at 'regular' times
10th August 6 32 0 13 MODERATE     10th August 2020 pollution risingA dangerously high period between midday and 4pm. Traffic weight led to congestion building up suddenly. All morning slow traffic.
11th August 28 18 0 12 MODERATE     11th August 2020 pollution especially PM2-5PM2.5 is higher and more dangerous as there is no 'safe lower limit'. Light variable winds - NE - NNE
12th August 33 22 0 12 MODERATE     12th August 2020 Pollution high PM2-5PM2.5 is again dangerously high throughout the day. Light variable winds.
13th August 25 18 0 12 MODERATE     13th August 2020 pollution levelsThis run of fine PM2.5 pollution is worrying. Again, plenty of traffic throughout the day. Light variable winds.
14th August 4 7 3 11 LOWLow Pollution - result!     14th August 2020 reduced pollutionWind picked up and changed direction to WNW-NW. This may explain the sudden drop in pollution. Yet again - 3-4am early peaks.
15th August 23 29 0 12 MODERATE     15th August 2020 Pollution increasing againBoth types of Particulate Matter represented again.
16th August 5 16 0 11 LOWLow Pollution - result!     16th August 2020 pollution diarySunday morning people on the move, but congesting in AQMA5 in the morning only with occasional peaks later.
17th August 4 16 1 13 LOWLow Pollution - result!     17th August 2020 Pollution levels average lowAnother example of early morning heavy traffic passing through Greenstreet. Background pollution remains low. Peaks of PM10 at usual times.
18th August 5 15 1 13 LOWLow Pollution - result!     18th August 2020 Pollution Diary PM10 massive peak between 11-11.30am. Traffic almost at a standstill - took a while to free up.
19th August 9 21 1 12 MODERATE     19th August 2020 PollutionMost of the late morning into the afternoon we saw higher levels of traffic.
20th August 4 14 1 15 LOWLow Pollution - result!     20th August 2020 PollutionTraffic throughout the working day was 'pulsing' in peaks but early and late the pollution was Low. Average was "Low". Midday to 4pm was VOC peaks.
21st August 5 23 0 13 MODERATE     21st August 2020 PollutionUsual peaks, with highest early morning.
22nd August 11 27 1 12 MODERATE   EXCEEDANCE!
10.00 - 11.00
.Very High Pollution Jogging
22nd August 2020 exceedane of PM10A busy day on the road with a very heavy traffic-loading before midday - enough to register as an "exceedance" of safe pollution over one hour. You could taste it ... after so many relatively good days.
23rd August 4 15 6 11 LOWLow Pollution - result!     23rd August 2020 Pollution graphCurious spike of PM10 from 1045pm to just after 11pm? Otherwise, this was a very good day!
24th August 5 20 5 14 MODERATE     24th August 2020 Pollution DIaryPM10 dominating the peaks during the day.
25th August 5 24 1 12 MODERATE     25th August 2020 Pollution diaryEarly good day becoming progressively much worse.
26th August 5 21 4 12 MODERATE     26th August 2020 Pollution DiaryPollution much higher overnight for extended period.
27th August 5 21 3 11 MODERATE     27th August 2020 Pollution DiaryThe average "Moderate" is created by larger peaks over a reasonable period.
28th August 10 24 1 12 MODERATE     28th August 2020 Pollution DiaryLate morning extended peak of PM10.
29th August 10 26 1 9 MODERATE     29th August 2020 Pollution DiaryUncomfortable levels of PM2.5.
30th August 6 30 4 8 MODERATE   EXCEEDANCE!
06.27 - 07.40
.Very High Pollution Jogging
30th August 2020 Pollution Diary GraphPM10 Exceedance of dangerous "very high" pollution for more than an hour.
31st August 4 11 6 10 LOWLow Pollution - result!     31st August 2020 Pollution Diary GraphA good Monday to be out and about during daylight.
SEPTEMBER 2020
1st Sept 4 12 6 12 LOWLow Pollution - result!     1st September 2020 Pollution DiaryThese peaks are at very low levels of pollution, another very good day to be out and about.
2nd Sept 5 15 6 22 MODERATE     2nd September 2020 Pollution DiaryUnusually high levels of VOC between 1-2pm. Higher PM10 early morning and later (8pm). The roadworks have been cleared for a few days now, so levels may change up again? wait and see.
3rd Sept 4 13 7 20 MODERATE     3rd September 2020 Pollution Diary GraphFigures made "Moderate" by VOC levels, otherwise fairly Low.
4th Sept 4 17 4 17 LOWLow Pollution - result!     4th September 2020 Pollution Diary GraphAnother dip in pollution. Very welcome for jogging!
5th Sept 4 20 5 11 MODERATE     5th September 2020 Pollution DiarySaturday: another 'day of two halves!' Nasty morning but the afternoon was good. Borne out by a jog along the A2!
6th Sept 12 19 1 11 LOWLow Pollution - result!     Yet again - enough traffic peaking at around 3am! Most is HGV - does anyone know what ferries arrive early doors?
7th Sept 14 22 1 12 MODERATE     Avery prounounced peak at midday as the weight of traffic caused tail-backs.
8th Sept 11 14 0 16 LOWLow Pollution - result!     Even distribution across the day.
9th Sept 14 21 1 13 MODERATE     Another half-hour midday spike at "Very High".
10th Sept 15 29 4 9 MODERATE     Very worrying levels (High and Very High) from 4pm untill midnight with stop-start traffic all evening.
11th Sept 14 21 1 11 LOWLow Pollution - result!     Regular peaks throughout the day and night.
12th Sept 12 20 1 13 MODERATE     Massive peak (High and Very High) around 6pm.
13th Sept 12 19 1 13 LOWLow Pollution - result!     Regular peaks throughout the day and night.
14th Sept 15 19 1 11 LOWLow Pollution - result!     Regular peaks throughout the day and night.
15th Sept 28 25 0 13 MODERATE     Two major peaks of PM10; PM2.5 was at very worrying levels throughout the day.
16th Sept 24 28 1 12 MODERATE     The peaks were PM10; PM2.5 was more evenly spread at a worrying level.
17th Sept 14 28 2 10 MODERATE     PM10 was the main culprit throughout day and night.
18th Sept 13 24 0 10 MODERATE     Worrying peaks from midday to 6pm.
19th Sept 13 22 0 13 MODERATE     Regular peaks throughout the day and night.
20th Sept 15 23 0 12 MODERATE     Regular peaks throughout the day and night.
21st Sept 16 17 1 12 LOWLow Pollution - result!     Stable pollution levels - good news!
22nd Sept 16 16 0 15 LOWLow Pollution - result!     Stable pollution levels - good news! A couple of stand-out peaks but not too bad.
23rd Sept 14 20 0 15 MODERATE     From 7pm to midnight, the sharp peaks ruined an otherwise good day.
24th Sept 13 21 3 11 MODERATE     Worrying peaks due to congestion around midday and again around 6-7pm.
25th Sept 14 18 2 7 LOW     50% of Data lost - connection issues
26th Sept 23 20 0 12 MODERATE     Single high peak of both PM2.5 and PM10 at 3am in the morning.
27th Sept 0 0 5 20 MODERATE     BACKGROUND POLLUTION Estimated Swale
28th Sept 15 14 16 5 LOW     BACKGROUND POLLUTION Estimated Swale
29th Sept 0 1 11 15 LOW     BACKGROUND POLLUTION Estimated Swale
30th Sept 0 0 0 30 MODERATE     BACKGROUND POLLUTION Estimated Swale
OCTOBER 2020
1st Oct 0 0 2 31 MODERATE     BACKGROUND POLLUTION Estimated Swale
2nd Oct 0 0 5 24 MODERATE     BACKGROUND POLLUTION Estimated Swale
3rd Oct 0 0 2 35 MODERATE     BACKGROUND POLLUTION Estimated Swale
4th Oct 5 5 9 11 LOW     BACKGROUND POLLUTION Estimated Swale
5th Oct 0 0 3 25 MODERATE     BACKGROUND POLLUTION Estimated Swale
6th Oct 1 2 5 17 LOW     BACKGROUND POLLUTION Estimated Swale
7th Oct 0 0 2 30 MODERATE     BACKGROUND POLLUTION Estimated Swale
8th Oct 12 9 17 1 LOW     BACKGROUND POLLUTION Estimated Swale
9th Oct 0 0 12 10 LOW     BACKGROUND POLLUTION Estimated Swale
10th Oct 4 4 9 11 LOW     BACKGROUND POLLUTION Estimated Swale
11th Oct 0 0 11 8 LOW     BACKGROUND POLLUTION Estimated Swale
12th Oct 23 20 0 12 MODERATE     FLOW RETURNS! AQMA5 roadside
13th Oct 17 18 0 11 LOW     Pulses throughout the day (and night)
14th Oct 18 18 1 12 LOW     Pulses throughout the day (and night)
15th Oct 16 20 1 12 MODERATE     Pulses throughout the day (and night)
16th Oct 18 18 1 13 LOW     PM2.5 &PM10 Peak at 18.30.
17th Oct 19 15 0 13 LOW     Quieter early morning and mid afternoon (Saturday)
18th Oct 24 17 0 13 MODERATE     Heaviest pollution 1900-2000 hrs
19th Oct 25 22 0 15 MODERATE     Much heavier pulses of particulate pollution 1400-1800 hrs
20th Oct 20 26 0 18 MODERATE     Major peaks PM10 from 0900 to midday
21st Oct 14 18 0 17 LOW     Slightly higher very earl and again 0900-1000 hrs
22nd Oct 18 29 1 13 MODERATE     Heavier pulses 0400-1100 hrs. HIGH pollution peaks 2200-midnight
23rd Oct 19 25 1 11 MODERATE     Heaviest across midday and 2100-2300 hrs
24th Oct 19 25 1 13 MODERATE     Very High peak 0500 hrs
25th Oct 19 22 2 10 MODERATE     PM Peaks 0900-1100 hrs
26th Oct 15 19 0 10 LOW     Pulsing all day with traffic flows
27th Oct 16 20 1 12 MODERATE     Higher pollution in morning
28th Oct 16 21 1 15 MODERATE     Even pulses throughout the period
29th Oct 17 25 0 14 MODERATE     Even pulses throughout the period
30th Oct 14 21 0 16 MODERATE     Quieter afternoon
31st Oct 19 25 1 12 MODERATE     Pulsing throughout
NOVEMBER 2020
1st Nov 19 29 1 13 MODERATE     1810pm VERY HIGH peak of PM10. Otherwise Moderate.
2nd Nov 14 24 0 12 MODERATE     Busy midday and late evening
3rd Nov 20 26 2 8 MODERATE     2230-2330pm HIGH Peak. Pulsing throughout at Moderate levels
4th Nov 31 37 17 5 MODERATE     1800-1830 VERY HIGH all PMs and NOx. Busy evening.
5th Nov 41 42 12 4 MODERATE     Pronounced pollution 0400-0500 and evening
6th Nov 43 42 4 7 MODERATE     Evening and early periods polluted most.
7th Nov 44 38 10 10 MODERATE     Yet again both PMs are peaking all day
8th Nov 46 43 1 15 MODERATE     Foul air quality again. Worst between midday to 0800 hrs.
9th Nov 27 30 0 19 MODERATE     1150am PM10 at VERY HIGH
10th Nov 27 29 1 15 MODERATE     0200 -0400 hhrs heaviest both PMs.
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Note: There are no known lower safety levels for PM2.5 (W.H.O.)

Pollution Diary Pages

We want to Breathe Clean Air

11 November, 2020