Blois Seasonal Pollution
Blois usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in July. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Centre-Val de Loire, France.
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Average EPA AQI
36
Rank 128 of 272 cities by average AQI
PM2.5
7.2
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
Blois
56
40
28
27
28
30
25
29
34
34
46
47
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Blois, the current global analytics build covers 335 daily rows from 2024-01-02 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.