Zgierz Seasonal Pollution
Zgierz usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in June. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Łódzkie, Poland.
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Average EPA AQI
70
Rank 8 of 155 cities by average AQI
PM2.5
20.1
ug/m3 annualized city average
Seasonality
January
Cleanest: June
Health indicator
0.9
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Zgierz
97
81
91
61
46
43
44
51
60
77
95
91
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Zgierz, the current global analytics build covers 361 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.