Southampton Seasonal Pollution
Southampton usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in July. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Southampton, United Kingdom.
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Average EPA AQI
37
Rank 73 of 171 cities by average AQI
PM2.5
7.4
ug/m3 annualized city average
Seasonality
November
Cleanest: July
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Southampton
44
33
38
30
39
32
27
36
34
32
57
38
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Southampton, the current global analytics build covers 342 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.