Harnes Seasonal Pollution
Harnes usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Hauts-de-France, France.
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Average EPA AQI
36
Rank 123 of 272 cities by average AQI
PM2.5
7.4
ug/m3 annualized city average
Seasonality
January
Cleanest: July
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Harnes
47
29
40
-
-
29
28
31
30
33
45
40
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Harnes, the current global analytics build covers 161 daily rows from 2024-01-02 to 2024-12-29. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.