Obernai Seasonal Pollution
Obernai usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Grand Est, France.
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Average EPA AQI
21
Rank 199 of 272 cities by average AQI
PM2.5
4.0
ug/m3 annualized city average
Seasonality
January
Cleanest: December
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Obernai
28
17
27
19
18
22
21
26
24
16
23
16
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Obernai, the current global analytics build covers 294 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.