Amstetten Seasonal Pollution
Amstetten usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in September. The page uses OpenAQ-derived daily history for 6 mapped monitoring locations in Niederösterreich, Austria.
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Average EPA AQI
42
Rank 29 of 68 cities by average AQI
PM2.5
9.5
ug/m3 annualized city average
Seasonality
November
Cleanest: September
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Amstetten
56
44
48
29
33
32
29
32
26
47
57
53
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Amstetten, the current global analytics build covers 299 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.