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Södertälje Seasonal Pollution

Södertälje usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in January. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Stockholm, Sweden.

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Average EPA AQI

13

Rank 27 of 31 cities by average AQI

PM2.5

n/a

ug/m3 annualized city average

Seasonality

March

Cleanest: January

Health indicator

n/a

cigarette-equivalent per day

Yearly EPA AQI trend

0501002024Södertälje

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec
Södertälje
6
15
29
20
22
12
8
10
12
11
11
6

What this seasonality page measures

Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.

For Södertälje, the current global analytics build covers 319 daily rows from 2024-01-01 to 2024-12-16. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.

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