Arras Seasonal Pollution
Arras usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in February. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Hauts-de-France, France.
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Average EPA AQI
25
Rank 192 of 272 cities by average AQI
PM2.5
6.8
ug/m3 annualized city average
Seasonality
December
Cleanest: February
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Arras
16
9
11
-
-
31
27
30
30
32
40
41
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Arras, the current global analytics build covers 173 daily rows from 2024-01-02 to 2024-12-30. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.