Crest Seasonal Pollution
Crest usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Auvergne-Rhone-Alpes, France.
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Average EPA AQI
25
Rank 193 of 272 cities by average AQI
PM2.5
4.8
ug/m3 annualized city average
Seasonality
August
Cleanest: December
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Crest
23
21
21
21
19
32
31
41
24
25
25
18
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Crest, the current global analytics build covers 305 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.