Couëron Seasonal Pollution
Couëron usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in August. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Pays de la Loire, France.
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Average EPA AQI
37
Rank 104 of 272 cities by average AQI
PM2.5
7.6
ug/m3 annualized city average
Seasonality
January
Cleanest: August
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Couëron
56
37
29
-
-
28
25
24
35
32
42
44
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Couëron, the current global analytics build covers 196 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.