Pori Seasonal Pollution
Pori usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in November. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Satakunta, Finland.
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Average EPA AQI
31
Rank 2 of 22 cities by average AQI
PM2.5
6.1
ug/m3 annualized city average
Seasonality
March
Cleanest: November
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Pori
37
27
54
35
40
31
30
32
27
25
16
28
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Pori, the current global analytics build covers 308 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.