Coulommiers Seasonal Pollution
Coulommiers usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in July. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Ile-de-France, France.
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Average EPA AQI
43
Rank 43 of 272 cities by average AQI
PM2.5
9.2
ug/m3 annualized city average
Seasonality
January
Cleanest: July
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Coulommiers
62
43
42
38
37
34
31
35
37
42
54
49
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Coulommiers, the current global analytics build covers 305 daily rows from 2024-01-02 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.