Lorient Seasonal Pollution
Lorient usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Bretagne, France.
Search city analytics
Average EPA AQI
39
Rank 75 of 272 cities by average AQI
PM2.5
7.9
ug/m3 annualized city average
Seasonality
November
Cleanest: July
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Lorient
53
43
36
40
33
37
30
31
42
38
53
47
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Lorient, the current global analytics build covers 272 daily rows from 2024-01-29 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.