Niederzier Seasonal Pollution
Niederzier usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in February. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in North Rhine-Westphalia, Germany.
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Average EPA AQI
40
Rank 137 of 297 cities by average AQI
PM2.5
8.4
ug/m3 annualized city average
Seasonality
January
Cleanest: February
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Niederzier
50
28
45
29
47
41
35
44
40
40
47
38
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Niederzier, the current global analytics build covers 320 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.