Bristol Seasonal Pollution
Bristol usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in April. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Bristol, City of, United Kingdom.
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Average EPA AQI
42
Rank 45 of 171 cities by average AQI
PM2.5
9.3
ug/m3 annualized city average
Seasonality
November
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Bristol
51
34
46
26
40
43
38
40
40
39
70
31
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Bristol, the current global analytics build covers 366 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.