Prague Seasonal Pollution
Prague usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in September. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Prague, Czech Republic.
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Average EPA AQI
51
Rank 32 of 61 cities by average AQI
PM2.5
13.2
ug/m3 annualized city average
Seasonality
January
Cleanest: September
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Prague
66
45
66
45
48
49
47
41
34
50
64
52
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Prague, the current global analytics build covers 309 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.