Warsaw Seasonal Pollution
Warsaw usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in July. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Masovian, Poland.
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Average EPA AQI
67
Rank 13 of 155 cities by average AQI
PM2.5
18.0
ug/m3 annualized city average
Seasonality
December
Cleanest: July
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Warsaw
73
62
76
59
55
59
54
57
68
73
83
84
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Warsaw, the current global analytics build covers 363 daily rows from 2024-01-03 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.