Łomża Seasonal Pollution
Łomża usually records its highest OpenAQ-derived EPA AQI in September and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Podlaskie, Poland.
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Average EPA AQI
22
Rank 116 of 155 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
September
Cleanest: July
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Łomża
29
23
29
20
21
17
15
17
40
-
-
-
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Łomża, the current global analytics build covers 251 daily rows from 2024-01-03 to 2024-09-11. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.