Catford Seasonal Pollution
Catford usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in February. The page uses OpenAQ-derived daily history for 7 mapped monitoring locations in Lewisham, United Kingdom.
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Average EPA AQI
42
Rank 44 of 171 cities by average AQI
PM2.5
8.7
ug/m3 annualized city average
Seasonality
November
Cleanest: February
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Catford
44
35
44
36
49
39
36
40
43
41
58
40
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Catford, 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.