Frankfurt Seasonal Pollution
Frankfurt usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in April. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Hesse, Germany.
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Average EPA AQI
43
Rank 89 of 297 cities by average AQI
PM2.5
9.1
ug/m3 annualized city average
Seasonality
January
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Frankfurt
55
38
53
32
36
39
36
41
44
45
49
48
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Frankfurt, the current global analytics build covers 342 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.