Montrouge Seasonal Pollution
Montrouge usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in December. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Ile-de-France, France.
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Average EPA AQI
44
Rank 34 of 272 cities by average AQI
PM2.5
14.0
ug/m3 annualized city average
Seasonality
January
Cleanest: December
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Montrouge
63
49
-
-
-
46
26
43
49
-
-
16
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Montrouge, the current global analytics build covers 118 daily rows from 2024-01-02 to 2024-12-30. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.