Mitcham Seasonal Pollution
Mitcham usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in April. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Merton, United Kingdom.
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Average EPA AQI
42
Rank 41 of 171 cities by average AQI
PM2.5
8.8
ug/m3 annualized city average
Seasonality
January
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Mitcham
52
42
39
27
48
51
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What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Mitcham, the current global analytics build covers 156 daily rows from 2024-01-01 to 2024-06-20. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.