POLLUTION DIARY
HISTORIC DATA - YEAR 2
-- 1st MARCH 2020 to END FEBRUARY 2021 --
(after this period, I used a new device Flow 2)
Return to Current Year
Explore Pre-Covid-19 Period (2020-2021)
- The Pollutants: I record four out of the five most toxic air pollutants associated with vehicles. I don't measure Ammonia (NH3).
- 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.
- Air Quality Indicators: These are based on EU, USA, and WHO thresholds for harmful pollutants over 1 hour, 24 hours, and a year.
- 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, and ozone)
- You will notice that pollution episodes can spread overnight.
AIR QUALITY INDICATOR (AQI) USED ON THIS SITE
(Bear in mind, there are no known lower safety levels for PM2.5)
Comments: Over recent weeks, the daily averages have often read "LOW" but that hides some serious pollution that is dangerous to health over shorter periods/peaks. This makes the case for continuous monitoring rather than the inadequate policy of Swale Borough Council who rely on ANNUAL averages of only Nitrogen Dioxide in Greenstreet. That is why they can suggest rescinding the AQMA5 status. Although they are also trying to persuade us that pollution is SO BAD that we need a bypass! Make up your minds SBC!
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 barely even after correcting the siting of their 'diffusion tubes' - pressed by Lynsted with Kingsdown Parish Council's criticism. Even so, SBC uses the lowest accuracy configuration of those tubes (singly).
SBC also fails to test for the more harmful PM2.5, PM10, and VOCs.
It appeaers that SBC would rather NOT know how much physical harm their decisions on planning have on our DAILY lives!
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 |
MARCH 2020 | ||||||||
1st March | 14 | 30 | 5 | 12 | MODERATE | ![]() |
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2nd March | 15 | 30 | 5 | 9 | MODERATE | ![]() |
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3rd March | 14 | 32 | 12 | 10 | MODERATE | ![]() |
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4th March | 20 | 29 | 22 | 10 | MODERATE | ![]() |
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5th March | 18 | 29 | 2 | 11 | MODERATE | ![]() |
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6th March | 19 | 29 | 14 | 14 | MODERATE | ![]() |
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7th March | 5 | 25 | 4 | 10 | MODERATE | Near exceedance | ![]() |
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8th March | 4 | 14 | 6 | 25 | MODERATE | ![]() |
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9th March | 4 | 15 | 2 | 20 | MODERATE | ![]() |
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10th March | 5 | 13 | 6 | 21 | MODERATE | ![]() |
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11th March | 4 | 10 | 4 | 18 | LOW![]() |
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12th March | 5 | 17 | 1 | 14 | LOW![]() |
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13th March | 5 | 24 | 8 | 11 | MODERATE | ![]() |
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14th March | 16 | 27 | 0 | 15 | MODERATE | ![]() |
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15th March | 13 | 26 | 1 | 15 | MODERATE | ![]() |
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16th March | 17 | 26 | 3 | 10 | MODERATE | ![]() |
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17th March | 19 | 30 | 1 | 15 | MODERATE | ![]() |
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18th March | 16 | 24 | 2 | 16 | MODERATE | ![]() |
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19th March | 17 | 19 | 2 | 9 | LOW![]() |
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20th March | 18 | 39 | 1 | 8 | MODERATE | ![]() |
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21st March | 17 | 32 | 4 | 6 | MODERATE | ![]() |
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22nd March | 18 | 28 | 20 | 7 | MODERATE | ![]() |
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23rd March | 26 | 31 | 26 | 8 | MODERATE | ![]() |
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24th March | 25 | 24 | 24 | 12 | MODERATE | ![]() |
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25th March | 27 | 24 | 17 | 10 | MODERATE | ![]() |
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26th March | 38 | 32 | 18 | 11 | MODERATE | ![]() |
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27th March | 38 | 38 | 18 | 15 | MODERATE | ![]() |
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28th March | 25 | 41 | 3 | 13 | MODERATE | ![]() |
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29th March | 18 | 42 | 13 | 8 | MODERATE | ![]() |
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30th March | 15 | 31 | 9 | 11 | MODERATE | ![]() |
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31st March | 15 | 31 | 10 | 13 | MODERATE | ![]() |
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APRIL 2020 | ||||||||
1st April | 18 | 24 | 16 | 13 | MODERATE | ![]() |
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2nd April | 14 | 23 | 0 | 21 | MODERATE | ![]() |
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3rd April | 21 | 42 | 2 | 19 | MODERATE | ![]() |
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4th April | 23 | 28 | 2 | 18 | MODERATE | ![]() |
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5th April | 17 | 22 | 4 | 19 | MODERATE | ![]() |
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6th April | 12 | 23 | 2 | 22 | MODERATE | ![]() |
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7th April | 20 | 37 | 4 | 13 | MODERATE | ![]() |
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8th April | 42 | 41 | 1 | 13 | MODERATE | ![]() |
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9th April | 50 | 52 | 2 | 13 | HIGH | EXCEEDANCE | EXCEEDANCE 07.33 - 08.47 . ![]() |
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10th April | 33 | 36 | 1 | 12 | MODERATE | ![]() |
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11th April | 18 | 24 | 1 | 14 | MODERATE | ![]() |
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12th April | 17 | 21 | 2 | 17 | MODERATE | ![]() |
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13th April | 17 | 40 | 6 | 6 | MODERATE | ![]() |
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14th April | 15 | 28 | 1 | 5 | MODERATE | ![]() |
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15th April | 27 | 37 | 28 | 8 | MODERATE | ![]() |
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16th April | 42 | 41 | 3 | 13 | MODERATE | ![]() |
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17th April | 19 | 42 | 1 | 13 | MODERATE | ![]() |
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18th April | 21 | 50 | 2 | 13 | HIGH | EXCEEDANCE![]() |
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19th April | 18 | 43 | 1 | 12 | MODERATE | ![]() |
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20th April | 18 | 47 | 1 | 12 | MODERATE | ![]() |
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21st April | 18 | 42 | 0 | 12 | MODERATE | ![]() |
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22nd April | 21 | 33 | 1 | 12 | MODERATE | ![]() |
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23rd April | 26 | 29 | 1 | 13 | MODERATE | ![]() |
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24th April | 23 | 27 | 2 | 12 | MODERATE | ![]() |
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25th April | 15 | 31 | 1 | 10 | MODERATE | ![]() |
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26th April | 14 | 22 | 1 | 12 | MODERATE | ![]() |
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27th April | 18 | 21 | 2 | 15 | LOW/ MODERATE | ![]() |
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28th April | 14 | 29 | 1 | 12 | MODERATE | ![]() |
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29th April | 12 | 26 | 0 | 19 | MODERATE | ![]() |
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30th April | 10 | 25 | 1 | 17 | MODERATE | ![]() |
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MAY 2020 |
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1st May | 10 | 23 | 2 | 14 | MODERATE | ![]() |
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2nd May | 8 | 21 | 1 | 13 | LOW/ MODERATE | ![]() |
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3rd May | 9 | 21 | 1 | 12 | LOW/ MODERATE | ![]() |
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4th May | 11 | 23 | 3 | 11 | MODERATE | ![]() |
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5th May | 11 | 28 | 1 | 9 | MODERATE | ![]() |
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6th May | 15 | 30 | 1 | 11 | MODERATE | ![]() |
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7th May | 14 | 24 | 1 | 18 | MODERATE | ![]() |
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8th May | 16 | 25 | 2 | 16 | MODERATE | ![]() |
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9th May | 29 | 36 | 3 | 14 | MODERATE | ![]() |
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10th May | 22 | 27 | 2 | 11 | MODERATE | ![]() |
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11th May | 12 | 32 | 3 | 5 | MODERATE | ![]() |
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12th May | 12 | 29 | 3 | 12 | MODERATE | ![]() |
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13th May | 11 | 26 | 3 | 9 | MODERATE | ![]() |
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14th May | 10 | 25 | 10 | 8 | MODERATE | ![]() |
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15th May | 10 | 23 | 2 | 13 | MODERATE | ![]() |
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16th May | 11 | 21 | 1 | 15 | LOW/ MODERATE | ![]() |
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17th May | 11 | 24 | 0 | 22 | MODERATE | ![]() |
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18th May | 12 | 23 | 0 | 20 | MODERATE | ![]() |
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19th May | 10 | 21 | 1 | 21 | LOW/ MODERATE | ![]() |
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20th May | 8 | 18 | 2 | 19 | LOW![]() |
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21st May | 10 | 19 | 1 | 17 | LOW![]() |
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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. |
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22nd May | 5 | 25 | 3 | 16 | MODERATE | ![]() |
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23rd May | 7 | 44 | 3 | 8 | MODERATE | ![]() |
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24th May | 7 | 34 | 23 | 8 | MODERATE | ![]() |
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25th May | 5 | 23 | 16 | 8 | MODERATE | ![]() |
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26th May | 5 | 19 | 15 | 10 | LOW![]() |
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27th May | 4 | 15 | 8 | 8 | LOW![]() |
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28th May | 6 | 35 | 8 | 4 | MODERATE | ![]() |
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29th May | 6 | 38 | 7 | 7 | MODERATE | ![]() |
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30th May | 5 | 25 | 13 | 12 | MODERATE | EXCEEDANCE 01.10 - 02.20 . ![]() |
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31st May | 4 | 15 | 14 | 14 | LOW![]() |
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JUNE 2020 |
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1st June | 4 | 15 | 11 | 13 | LOW![]() |
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2nd June | 4 | 16 | 23 | 14 | LOW![]() |
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3rd June | 4 | 11 | 11 | 13 | LOW![]() |
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4th June | 4 | 11 | 6 | 10 | LOW![]() |
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5th June | 4 | 12 | 7 | 15 | LOW![]() |
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6th June | 5 | 16 | 4 | 15 | LOW![]() |
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7th June | 4 | 9 | 0 | 10 | DUFF DATA | ![]() |
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8th June | 5 | 21 | 5 | 13 | MODERATE | ![]() |
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9th June | 4 | 14 | 14 | 13 | LOW![]() |
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10th June | 4 | 18 | 5 | 14 | LOW![]() |
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11th June | 5 | 22 | 2 | 12 | MODERATE | ![]() |
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12th June | 4 | 18 | 9 | 14 | LOW![]() |
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13th June | 4 | 14 | 13 | 16 | LOW![]() |
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14th June | 4 | 11 | 9 | 17 | LOW![]() |
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15th June | 4 | 12 | 9 | 16 | LOW![]() |
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16th June | 4 | 10 | 8 | 16 | LOW![]() |
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17th June | 4 | 10 | 7 | 13 | LOW![]() |
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18th June | 4 | 12 | 1 | 13 | LOW![]() |
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19th June | 4 | 11 | 5 | 13 | LOW![]() |
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20th June | 4 | 12 | 9 | 14 | LOW![]() |
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21st June | 4 | 16 | 5 | 12 | LOW![]() |
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22nd June | 5 | 20 | 6 | 13 | MODERATE | ![]() |
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23rd June | 5 | 20 | 6 | 13 | MODERATE | ![]() |
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24th June | 4 | 15 | 3 | 11 | LOW![]() |
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25th June | 4 | 13 | 2 | 12 | LOW![]() |
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26th June | 5 | 19 | 0 | 19 | LOW![]() |
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27th June | 4 | 15 | 1 | 12 | LOW![]() |
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28th June | 5 | 18 | 4 | 12 | LOW![]() |
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29th June | 5 | 18 | 4 | 12 | LOW![]() |
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30th June | 4 | 16 | 1 | 13 | LOW![]() |
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JULY 2020 |
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1st July | 4 | 14 | 9 | 14 | LOW![]() |
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2nd July | 6 | 21 | 5 | 14 | MODERATE | ![]() |
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3rd July | 4 | 14 | 5 | 12 | LOW![]() |
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4th July | 4 | 13 | 3 | 12 | LOW![]() |
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5th July | 6 | 16 | 3 | 13 | LOW![]() |
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6th July | 6 | 27 | 12 | 10 | MODERATE | ![]() |
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7th July | 7 | 21 | 8 | 13 | MODERATE | ![]() |
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8th July | 4 | 14 | 2 | 14 | LOW![]() |
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9th July | 4 | 14 | 4 | 12 | LOW![]() |
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10th July | 4 | 15 | 3 | 8 | LOW![]() |
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11th July | 4 | 15 | 11 | 9 | LOW![]() |
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12th July | 5 | 17 | 15 | 11 | LOW![]() |
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13th July | 5 | 21 | 7 | 15 | MODERATE | ![]() |
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14th July | 5 | 17 | 2 | 12 | LOW![]() |
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15th July | 4 | 13 | 5 | 14 | LOW![]() |
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16th July | 4 | 11 | 5 | 13 | LOW![]() |
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17th July | 5 | 15 | 5 | 16 | LOW![]() |
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18th July | 5 | 14 | 1 | 15 | LOW![]() |
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19th July | 4 | 12 | 1 | 10 | LOW![]() |
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20th July | 5 | 19 | 14 | 9 | LOW![]() |
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21st July | 5 | 23 | 14 | 10 | MODERATE | ![]() |
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22nd July | 4 | 13 | 7 | 15 | LOW![]() |
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23rd July | 5 | 17 | 3 | 16 | LOW![]() |
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24th July | 4 | 13 | 2 | 15 | LOW![]() |
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25th July | 4 | 12 | 0 | 12 | LOW![]() |
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26th July | 4 | 15 | 7 | 10 | LOW![]() |
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27th July | 5 | 15 | 2 | 13 | LOW![]() |
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28th July | 4 | 14 | 8 | 12 | LOW![]() |
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29th July | 4 | 16 | 8 | 12 | LOW![]() |
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30th July | 6 | 21 | 5 | 14 | MODERATE | ![]() |
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31st July | 4 | 11 | 2 | 33 | ![]() |
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AUGUST 2020 | ||||||||
1st August | 8 | 20 | 1 | 17 | ![]() |
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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 | ![]() |
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5th August | 5 | 18 | 4 | 12 | ![]() |
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6th August | 10 | 10 | 10 | 22 | Public Data - Background estimates for our area. No Flow data | |||
7th August | 8 | 19 | 1 | 13 | LOW![]() |
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8th August | 17 | 22 | 0 | 13 | MODERATE | ![]() |
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9th August | 5 | 28 | 0 | 11 | MODERATE | ![]() |
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10th August | 6 | 32 | 0 | 13 | MODERATE | ![]() |
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11th August | 28 | 18 | 0 | 12 | MODERATE | ![]() |
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12th August | 33 | 22 | 0 | 12 | MODERATE | ![]() |
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13th August | 25 | 18 | 0 | 12 | MODERATE | ![]() |
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14th August | 4 | 7 | 3 | 11 | LOW![]() |
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15th August | 23 | 29 | 0 | 12 | MODERATE | ![]() |
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16th August | 5 | 16 | 0 | 11 | LOW![]() |
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17th August | 4 | 16 | 1 | 13 | LOW![]() |
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18th August | 5 | 15 | 1 | 13 | LOW![]() |
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19th August | 9 | 21 | 1 | 12 | MODERATE | ![]() |
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20th August | 4 | 14 | 1 | 15 | LOW![]() |
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21st August | 5 | 23 | 0 | 13 | MODERATE | ![]() |
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22nd August | 11 | 27 | 1 | 12 | MODERATE | EXCEEDANCE! 10.00 - 11.00 . ![]() |
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23rd August | 4 | 15 | 6 | 11 | LOW![]() |
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24th August | 5 | 20 | 5 | 14 | MODERATE | ![]() |
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25th August | 5 | 24 | 1 | 12 | MODERATE | ![]() |
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26th August | 5 | 21 | 4 | 12 | MODERATE | ![]() |
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27th August | 5 | 21 | 3 | 11 | MODERATE | ![]() |
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28th August | 10 | 24 | 1 | 12 | MODERATE | ![]() |
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29th August | 10 | 26 | 1 | 9 | MODERATE | ![]() |
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30th August | 6 | 30 | 4 | 8 | MODERATE | EXCEEDANCE! 06.27 - 07.40 . ![]() |
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31st August | 4 | 11 | 6 | 10 | LOW![]() |
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SEPTEMBER 2020 | ||||||||
1st Sept | 4 | 12 | 6 | 12 | LOW![]() |
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2nd Sept | 5 | 15 | 6 | 22 | MODERATE | ![]() |
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3rd Sept | 4 | 13 | 7 | 20 | MODERATE | ![]() |
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4th Sept | 4 | 17 | 4 | 17 | LOW![]() |
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5th Sept | 4 | 20 | 5 | 11 | MODERATE | ![]() |
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6th Sept | 12 | 19 | 1 | 11 | LOW![]() |
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 | LOW![]() |
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 | LOW![]() |
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 | LOW![]() |
Regular peaks throughout the day and night. | ||
14th Sept | 15 | 19 | 1 | 11 | LOW![]() |
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 | LOW![]() |
Stable pollution levels - good news! | ||
22nd Sept | 16 | 16 | 0 | 15 | LOW![]() |
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 | LOCK DOWN 2 STARTS AND TRAFFIC DOESN'T CHANGE IN NEXT TWO WEEKS!: Pronounced pollution 0400-0500 and evening |
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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 hrs heaviest both PMs. | ||
11th Nov | 26 | 36 | 1 | 14 | MODERATE | Between 06.40 and 07.20 PM10 and PM2.5 VERY HIGH pollution levels were reached - 20 Minutes short of "exceedance". From 1400 to midnight there were continuous pulses of HIGH pollution. | ||
12th Nov | 21 | 26 | 1 | 12 | MODERATE | Overnight peaks finally dropped at 02.00am. The afternoon saw pulses of traffic congestion and peaks. | ||
13th Nov | 23 | 20 | 1 | 11 | MODERATE | Moderate peaks from midday. | ||
14th Nov | 26 | 21 | 0 | 15 | MODERATE | 1740-17.25 VERY HIGH POLLUTION - 15 minutes short of "Exceedance" (100+ on the Scale) | ||
15th Nov | 20 | 16 | 1 | 13 | Unremarkable. | |||
16th Nov | 20 | 15 | 1 | 12 | Unremarkable. | |||
17th Nov | 22 | 24 | 0 | 20 | Large continuous peak - 10.30-midday. Otherwise ripples all day. | |||
18th Nov | 24 | 23 | 1 | 14 | ||||
19th Nov | 24 | 17 | 3 | 8 | ||||
20th Nov | 5 | 18 | 4 | 8 | LOW | Flow I data interrupted. Flow II. Peak 8pm and at 18.30 - graph | ||
21st Nov | 4 | 9 | 10 | 17 | LOW | FLOW II data and graph | ||
22nd Nov | 4 | 11 | 2 | 10 | LOW | FLOW II: Unremarkable. | ||
23rd Nov | 7 | 23 | 1 | 7 | MODERATE | FLOW II: 09.00-10.30: Lengthy Peak. Otherwise unremarkable | ||
24th Nov | 4 | 14 | 3 | 6 | LOW | FLOW II: Sharp PM 10 peak 1pm. Otherwise Low. | ||
25th Nov | 4 | 16 | 3 | 14 | LOW | FLOW II: Very High sharp Peak 04.00am only | ||
26th Nov | 26 | 20 | 1 | 12 | MODERATE | Flow I Data restored. | ||
27th Nov | 34 | 30 | 1 | 11 | MODERATE | |||
28th Nov | 48 | 43 | 4 | 14 | MODERATE | High Peaks pulsing all day and night. | ||
29th Nov | 39 | 30 | 2 | 12 | MODERATE | Escallating peaks from morning to evening | ||
30th Nov | 32 | 29 | 3 | 13 | MODERATE | Higher peaks reduced gradually to 10.00am. | ||
DECEMBER 2020 |
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1st Dec | 20 | 25 | 3 | 8 | MODERATE | Peaks from 8-10am. | ||
2nd Dec | 34 | 45 | 15 | 8 | MODERATE | EXCEEDANCE | VERY High Peaks midnight to 02.00am; Exceedance peaks of PM10: 16.25-18.25pm. | |
3rd Dec | 25 | 28 | 15 | 12 | MODERATE | VERY HIGH PEAKS of PM10 between 0620-8.40. Not an Exceedance as the level was not continuous. | ||
4th Dec | 23 | 18 | 7 | 11 | MODERATE | |||
5th Dec | 27 | 18 | 9 | 11 | MODERATE | |||
6th Dec | 27 | 16 | 8 | 12 | MODERATE | PM2.5 grew throughout the day. | ||
7th Dec | 40 | 31 | 2 | 10 | MODERATE | Both PMs increased through the day | ||
8th Dec | 47 | 36 | 9 | 12 | MODERATE | Very close to an all-day exceedance of PM2.5 | ||
9th Dec | 30 | 22 | 23 | 15 | MODERATE | |||
10th Dec | 26 | 20 | 5 | 15 | MODERATE | "Swell" of NOx from morning through the evening. | ||
11th Dec | 23 | 17 | 5 | 21 | MODERATE | Short VOC peal at midday | ||
12th Dec | 21 | 17 | 2 | 17 | MODERATE | |||
13th Dec | 32 | 22 | 20 | 14 | MODERATE | |||
14th Dec | 22 | 20 | 3 | 20 | MODERATE | Ripples all afternoon and peak at 8pm | ||
15th Dec | 23 | 21 | 1 | 12 | MODERATE | Sharp Peaks at 9am and midday | ||
16th Dec | 22 | 18 | 0 | 14 | MODERATE | Peak at 19.00pm | ||
17th Dec | 20 | 19 | 3 | 12 | MODERATE | Pulsing all day | ||
18th Dec | 22 | 18 | 0 | 14 | MODERATE | |||
19th Dec | 22 | 19 | 0 | 13 | MODERATE | Pulsing all day. | ||
20th Dec | 23 | 20 | 1 | 8 | MODERATE | PM10 Peak 0500am. | ||
21st Dec | 24 | 21 | 0 | 14 | MODERATE | TIGHTER LOCKDOWN ANNOUNCED. HIGH peak 1220-1410 - both PMs. | ||
22nd Dec | 21 | 19 | 0 | 14 | MODERATE | |||
23rd Dec | 23 | 17 | 0 | 13 | MODERATE | Flat until 1700pm peak to 1900. | ||
24th Dec | 18 | 17 | 0 | 4 | LOW | Moderate peak 0600-0800; Flat pulsing otherwise. | ||
25th Dec | 28 | 17 | 2 | 3 | MODERATE | Increasing PM2.5 from 1600-midnight | ||
26th Dec | 20 | 15 | 11 | 10 | MODERATE | 1110am-1250pm peak. Otherwise largely low pulses. | ||
27th Dec | 22 | 17 | 7 | 11 | MODERATE | Increasing from 2000 to midnight | ||
28th Dec | 31 | 21 | 2 | 5 | MODERATE | Early morning peak and late night. | ||
29th Dec | 35 | 20 | 2 | 5 | MODERATE | One peak at 1500pm. | ||
30th Dec | 37 | 24 | 9 | 6 | MODERATE | Significant peaks all day. | ||
31st Dec | 28 | 20 | 1 | 5 | MODERATE | Continuous pulsing all Day. | ||
2021 - JANUARY |
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1st Jan | 42 | 38 | 18 | 7 | MODERATE | High Peaks (PM10) from 1500-2200pm | ||
2nd Jan | 31 | 20 | 17 | 11 | MODERATE | Pulsing all day. Short peak 2130pm | ||
3rd Jan | 34 | 23 | 15 | 11 | MODERATE | Pulsing all day.Two sharp peaks early evening. | ||
4th Jan | 26 | 21 | 5 | 12 | MODERATE | Pulsing all day. Sharp peak at 2000pm | ||
5th Jan | 26 | 18 | 6 | 11 | MODERATE | One sharp peak 1000. Pulses all day. | ||
6th Jan | 27 | 16 | 9 | 12 | MODERATE | Saw-tooth profile all day. Distinct highs and lows ranges. | ||
7th Jan | 38 | 29 | 10 | 11 | MODERATE | Gradual rise high peak 1730-2045pm then sharp drop-off. | ||
8th Jan | 31 | 22 | 4 | 9 | MODERATE | Saw-tooth all day pulsing. | ||
9th Jan | 36 | 30 | 9 | 12 | MODERATE | Marked series of peaks into "Very High" from midday to 1600pm. Otherwise flat pulses. | ||
10th Jan | 31 | 25 | 9 | 11 | MODERATE | Saw-tooth all day. | ||
11th Jan | 28 | 22 | 19 | 41 | MODERATE | 900am to 1700pm High periods. | ||
12th Jan | 19 | 14 | 2 | 33 | MODERATE | Low all day to 1700 sharp peak. Pulses thereafter. | ||
13th Jan | 30 | 23 | 18 | 18 | MODERATE | High peaks and periods from 0400 to 1845pm. | ||
14th Jan | 23 | 15 | 0 | 13 | MODERATE | Pulsing all day | ||
15th Jan | 39 | 25 | 8 | 11 | MODERATE | Moderate with higher peaks through the evening | ||
16th Jan | 33 | 24 | 12 | 17 | MODERATE | Very busy peaks from minight to 1600p, then flat | ||
17th Jan | 24 | 21 | 4 | 15 | MODERATE | Sunday: Pulsing all day with peak 2300-midnight | ||
18th Jan | 22 | 17 | 33 | 16 | MODERATE | High from midday to 2200pm. | ||
19th Jan | 20 | 17 | 2 | 29 | MODERATE | Quiet except for peaks at 11-12midday; 1800 peak. | ||
20th Jan | 20 | 14 | 0 | 23 | MODERATE | Relatively quiet all day. | ||
21st Jan | 18 | 17 | 1 | 15 | LOW | Even distribution. Spikes at 7am and 5pm. | ||
22nd Jan | 24 | 21 | 12 | 9 | MODERATE | Even distribution in day; sharp up-ticks pm. | ||
23rd Jan | 32 | 21 | 3 | 6 | MODERATE | Even distribution | ||
24th Jan | 28 | 24 | 11 | 5 | MODERATE | Even. Spikes after 4pm | ||
25th Jan | 24 | 18 | 12 | 6 | MODERATE | Active ripples all day | ||
26th Jan | 27 | 21 | 17 | 12 | MODERATE | Sharp-toothed ripples all day. Bulge of NO2 from 4pm to 8pm. | ||
27th Jan | 29 | 21 | 7 | 21 | MODERATE | PM10 Peak from 7-9am. Otherwise even spread of shallow pulses all day. | ||
28th Jan | 18 | 15 | 13 | 30 | MODERATE | NO2 heavier from 11am to mid-afternoon | ||
29th Jan | 22 | 18 | 1 | 32 | MODERATE | VOC sustained peaks at 11-noon, 3-4 pm trailing off during the evening. | ||
30th Jan | 23 | 17 | 1 | 11 | MODERATE | Early morning peaks to 6am; Modest ripples thereafter. | ||
31st Jan | 38 | 25 | 6 | 7 | MODERATE | Average was raised by spikes at 8-9am and 8-10pm. | ||
2021 - FEBRUARY |
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1st Feb | 7 | 12 | 3 | 10 | LOW | Flat-lines early am and evning but higher through the business day. | ||
2nd Feb | 11 | 22 | 9 | 5 | MODERATE | Lumps of pollution from midday. | ||
3rd Feb | 6 | 22 | 6 | 26 | MODERATE | Sharp spike all night to 8-9am; huge spike of VOC 9-10pm. "22" is at margins of accuracy (+/- 10%) | ||
4th Feb | 25 | 20 | 3 | 15 | MODERATE | Marginal measurement at 24 hr period. | ||
5th Feb | 26 | 18 | 1 | 14 | MODERATE | Safely in-"Moderate" band. Pronounced lumps at times throughout. | ||
6th Feb | 32 | 22 | 3 | 11 | MODERATE | Spikes throughout. | ||
7th Feb | 19 | 17 | 0 | 4 | LOW | Marginal at "19" (+/- 10%). Spiky throughout. | ||
8th Feb | 11 | 15 | 0 | 4 | LOW | Safely in "LOW" | ||
9th Feb | 7 | 13 | 2 | 4 | LOW | Very good quality air. A couple of PM10 spikes - 7am and 12.30pm. | ||
10th Feb | 14 | 16 | 14 | 5 | LOW | Good air. A few spikes. | ||
11th Feb | 17 | 14 | 7 | 6 | LOW | Good air. Ripples throughout. | ||
12th Feb | 10 | 13 | 6 | 6 | LOW | Good air except two pronounce spikes at 8am and 4pm. | ||
13th Feb | 9 | 13 | 7 | 8 | LOW | Large VERY HIGH (241 !) spike at midday of NO2 | ||
14th Feb | 12 | 36 | 4 | 16 | MODERATE | Serious prolonged PM10 at VERY HIGH but just short of 1-hour | ||
15th Feb | 5 | 20 | 14 | 26 | MODERATE | VOC HIGH plateau 11am-2pm. | ||
16th Feb | 4 | 20 | 6 | 27 | MODERATE | VOC HIGH plateau 4-6.30pm. | ||
17th Feb | Data Dropout - power lead loose | |||||||
18th Feb | Data Dropout - power lead loose | |||||||
19th Feb | 19 | 19 | 8 | 13 | LOW | Partial data set - unreliable | ||
20th Feb | 24 | 28 | 0 | 15 | MODERATE | FLOW 1. Early am sharp spikes; calmer from midday | ||
21st Feb | 26 | 23 | 2 | 12 | MODERATE | FLOW 1. Higher early am to 10am. Rising again from 8pm. All Particulates. | ||
22nd Feb | 26 | 22 | 1 | 12 | MODERATE | FLOW 1. Saw-toothed all day. | ||
23rd Feb | 19 | 15 | 1 | 13 | LOW | PM2.5 is marginal (+/- 10%). However major Particulate spikes 3-4.30pm skew the day's data. | ||
24th Feb | 19 | 22 | 1 | 15 | MODERATE | Marginal. Swatoothed all day. | ||
25th Feb | 25 | 26 | 1 | 11 | MODERATE | All Particulates PM10 VERY HIGH spike at 7pm. | ||
26th Feb | 27 | 26 | 6 | 6 | MODERATE | Spiky all day. especially in the evening | ||
27th Feb | 34 | 25 | 8 | 5 | MODERATE | Bulge midday to 3pm; rising from 7pm to 10pm. | ||
28th Feb | 35 | 35 | 2 | 8 | MODERATE | PM10 VERY HIGH 10.13-30am |