Piastów Seasonal Pollution
Piastów usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in May. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Mazowieckie, Poland.
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Average EPA AQI
61
Rank 48 of 155 cities by average AQI
PM2.5
15.5
ug/m3 annualized city average
Seasonality
November
Cleanest: May
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Piastów
73
61
75
53
43
47
43
50
62
68
76
75
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Piastów, the current global analytics build covers 364 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.