Dorval Seasonal Pollution
Dorval usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in November. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Quebec, Canada.
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Average EPA AQI
32
Rank 69 of 158 cities by average AQI
PM2.5
6.5
ug/m3 annualized city average
Seasonality
August
Cleanest: November
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Dorval
32
37
26
22
32
35
41
46
36
25
20
35
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Dorval, the current global analytics build covers 363 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.