Crest Health Impact
Crest averaged 4.8 ug/m3 PM2.5, equal to 1.0x the WHO annual PM2.5 guideline and about 0.2 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Auvergne-Rhone-Alpes, France.
Search city analytics
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 health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
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.