Erfurt Seasonal Pollution
Erfurt usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in April. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Thuringia, Germany.
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Average EPA AQI
39
Rank 165 of 297 cities by average AQI
PM2.5
8.1
ug/m3 annualized city average
Seasonality
March
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Erfurt
50
32
59
31
35
36
31
39
40
39
41
39
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Erfurt, the current global analytics build covers 343 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.