Paris Seasonal Pollution
Paris usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in March. The page uses OpenAQ-derived daily history for 7 mapped monitoring locations in Ile-de-France, France.
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Average EPA AQI
45
Rank 26 of 272 cities by average AQI
PM2.5
9.3
ug/m3 annualized city average
Seasonality
January
Cleanest: March
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Paris
57
41
35
36
41
44
40
43
43
45
54
51
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Paris, the current global analytics build covers 340 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.