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Norrköping Seasonal Pollution

Norrköping usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in November. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Östergötland, Sweden.

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Average EPA AQI

29

Rank 9 of 31 cities by average AQI

PM2.5

5.7

ug/m3 annualized city average

Seasonality

March

Cleanest: November

Health indicator

0.3

cigarette-equivalent per day

Yearly EPA AQI trend

0501002024Norrköping

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec
Norrköping
19
36
41
30
39
29
25
31
32
27
19
22

What this seasonality page measures

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

For Norrköping, the current global analytics build covers 363 daily rows from 2024-01-03 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.

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