Rezé Seasonal Pollution
Rezé usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in May. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Pays de la Loire, France.
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Average EPA AQI
42
Rank 53 of 272 cities by average AQI
PM2.5
8.4
ug/m3 annualized city average
Seasonality
December
Cleanest: May
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Rezé
53
41
44
35
32
36
33
34
40
40
54
56
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Rezé, the current global analytics build covers 274 daily rows from 2024-01-29 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.