United Kingdom Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 171 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Didcot
46
35
52
33
78
115
71
80
39
33
58
56
Maidstone
-
-
-
-
-
-
-
-
-
48
73
46
Downham Market
-
-
-
-
-
-
-
-
58
50
66
49
East Ham
59
51
55
-
-
-
-
-
-
-
-
-
London
50
48
57
41
62
52
52
55
56
52
67
51
Doncaster
-
-
-
-
-
-
-
-
-
49
66
43
Brighton
-
-
43
46
64
51
44
46
48
41
73
57
Leighton Buzzard
-
-
-
-
-
-
-
-
-
48
70
36
Methodology
The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.