Lohja Health Impact
Lohja averaged 4.6 ug/m3 PM2.5, equal to 0.9x the WHO annual PM2.5 guideline and about 0.2 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Uusimaa, Finland.
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Average EPA AQI
24
Rank 7 of 22 cities by average AQI
PM2.5
4.6
ug/m3 annualized city average
Seasonality
January
Cleanest: November
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Lohja
39
25
39
24
28
22
25
27
29
21
16
19
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Lohja, the current global analytics build covers 311 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.