Liepāja Seasonal Pollution
Liepāja usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in July. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Liepāja, Latvia.
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Average EPA AQI
47
Rank 1 of 4 cities by average AQI
PM2.5
9.6
ug/m3 annualized city average
Seasonality
March
Cleanest: July
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Liepāja
50
54
60
53
49
42
33
37
46
47
46
50
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Liepāja, the current global analytics build covers 344 daily rows from 2024-01-01 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.