Laval Health Impact
Laval averaged 7.6 ug/m3 PM2.5, equal to 1.5x the WHO annual PM2.5 guideline and about 0.3 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Pays de la Loire, France.
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Average EPA AQI
25
Rank 191 of 272 cities by average AQI
PM2.5
7.6
ug/m3 annualized city average
Seasonality
November
Cleanest: March
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Laval
15
11
10
-
-
-
-
20
33
33
46
42
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Laval, the current global analytics build covers 139 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.