Grigny Health Impact
Grigny averaged 19.9 ug/m3 PM2.5, equal to 4.0x the WHO annual PM2.5 guideline and about 0.9 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.
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Average EPA AQI
69
Rank 1 of 272 cities by average AQI
PM2.5
19.9
ug/m3 annualized city average
Seasonality
January
Cleanest: February
Health indicator
0.9
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Grigny
70
67
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What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Grigny, the current global analytics build covers 36 daily rows from 2024-01-02 to 2024-02-07. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.