L’Ancienne-Lorette Seasonal Pollution
L’Ancienne-Lorette usually records its highest OpenAQ-derived EPA AQI in February and its cleanest month in April. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Quebec, Canada.
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Average EPA AQI
35
Rank 47 of 158 cities by average AQI
PM2.5
7.1
ug/m3 annualized city average
Seasonality
February
Cleanest: April
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
L’Ancienne-Lorette
41
47
32
22
29
35
42
45
32
28
24
38
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For L’Ancienne-Lorette, the current global analytics build covers 367 daily rows from 2024-01-01 to 2025-01-01. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.