Dreux Seasonal Pollution
Dreux usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in August. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Centre-Val de Loire, France.
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Average EPA AQI
19
Rank 202 of 272 cities by average AQI
PM2.5
12.4
ug/m3 annualized city average
Seasonality
January
Cleanest: August
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Dreux
50
13
16
-
-
12
12
9
10
12
16
13
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Dreux, the current global analytics build covers 175 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.