Hampstead Seasonal Pollution
Hampstead usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in December. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Camden, United Kingdom.
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Average EPA AQI
47
Rank 22 of 171 cities by average AQI
PM2.5
10.1
ug/m3 annualized city average
Seasonality
November
Cleanest: December
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Hampstead
53
47
54
42
54
46
36
50
52
47
56
28
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Hampstead, the current global analytics build covers 334 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.