Chojnów Seasonal Pollution
Chojnów 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 Dolnośląskie, Poland.
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Average EPA AQI
64
Rank 28 of 155 cities by average AQI
PM2.5
17.6
ug/m3 annualized city average
Seasonality
March
Cleanest: July
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Chojnów
80
75
87
55
48
49
44
52
54
73
73
86
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Chojnów, the current global analytics build covers 351 daily rows from 2024-01-15 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.