Loudéac Seasonal Pollution
Loudéac usually records its highest OpenAQ-derived EPA AQI in September and its cleanest month in March. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Bretagne, France.
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Average EPA AQI
27
Rank 187 of 272 cities by average AQI
PM2.5
5.1
ug/m3 annualized city average
Seasonality
September
Cleanest: March
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Loudéac
-
23
19
24
28
32
24
26
35
23
32
31
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Loudéac, the current global analytics build covers 271 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.