Langen Seasonal Pollution
Langen usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in July. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Lower Saxony, Germany.
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Average EPA AQI
21
Rank 259 of 297 cities by average AQI
PM2.5
10.5
ug/m3 annualized city average
Seasonality
November
Cleanest: July
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Langen
14
13
21
12
14
13
10
14
15
31
42
41
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Langen, the current global analytics build covers 328 daily rows from 2024-01-01 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.