Sondrio Seasonal Pollution
Sondrio usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in May. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Lombardy, Italy.
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Average EPA AQI
38
Rank 76 of 132 cities by average AQI
PM2.5
17.6
ug/m3 annualized city average
Seasonality
January
Cleanest: May
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Sondrio
91
71
40
19
14
30
28
38
16
28
49
71
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Sondrio, the current global analytics build covers 287 daily rows from 2024-01-29 to 2024-12-30. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.