Eltham Seasonal Pollution
Eltham 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 Greenwich, United Kingdom.
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Average EPA AQI
39
Rank 56 of 171 cities by average AQI
PM2.5
8.4
ug/m3 annualized city average
Seasonality
November
Cleanest: December
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Eltham
47
38
48
37
47
38
33
35
36
34
51
24
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Eltham, the current global analytics build covers 364 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.