Unna Seasonal Pollution
Unna usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in North Rhine-Westphalia, Germany.
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Average EPA AQI
48
Rank 23 of 297 cities by average AQI
PM2.5
10.0
ug/m3 annualized city average
Seasonality
March
Cleanest: July
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Unna
55
42
64
43
49
47
40
49
44
41
53
48
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Unna, the current global analytics build covers 321 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.