Legionowo Seasonal Pollution
Legionowo 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 Mazowieckie, Poland.
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Average EPA AQI
63
Rank 40 of 155 cities by average AQI
PM2.5
16.0
ug/m3 annualized city average
Seasonality
March
Cleanest: July
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Legionowo
74
68
80
59
54
52
48
51
61
68
71
72
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Legionowo, the current global analytics build covers 343 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.