Stony Plain Seasonal Pollution
Stony Plain usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in April. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Alberta, Canada.
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Average EPA AQI
34
Rank 52 of 158 cities by average AQI
PM2.5
8.1
ug/m3 annualized city average
Seasonality
July
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Stony Plain
39
26
26
16
35
30
60
57
30
21
31
37
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Stony Plain, 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.