Olsztyn Seasonal Pollution
Olsztyn 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 Warmińsko-Mazurskie, Poland.
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Average EPA AQI
57
Rank 64 of 155 cities by average AQI
PM2.5
14.2
ug/m3 annualized city average
Seasonality
March
Cleanest: July
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Olsztyn
66
60
74
52
53
50
42
49
57
57
61
62
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Olsztyn, the current global analytics build covers 359 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.