Skellefteå Seasonal Pollution
Skellefteå usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in January. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Västerbotten, Sweden.
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Average EPA AQI
34
Rank 5 of 31 cities by average AQI
PM2.5
6.4
ug/m3 annualized city average
Seasonality
April
Cleanest: January
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Skellefteå
20
26
-
62
49
27
28
35
23
42
22
20
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Skellefteå, the current global analytics build covers 206 daily rows from 2024-01-29 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.