Sankt Gallen Seasonal Pollution
Sankt Gallen usually records its highest OpenAQ-derived EPA AQI in June and its cleanest month in January. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Sankt Gallen, Switzerland.
Search city analytics
Average EPA AQI
8
Rank 31 of 33 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
June
Cleanest: January
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Sankt Gallen
5
8
7
-
7
11
9
9
6
8
9
7
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Sankt Gallen, the current global analytics build covers 273 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.