Stratford Seasonal Pollution
Stratford usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in October. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Prince Edward Island, Canada.
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Average EPA AQI
22
Rank 138 of 158 cities by average AQI
PM2.5
4.1
ug/m3 annualized city average
Seasonality
August
Cleanest: October
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Stratford
25
26
24
24
19
22
27
30
19
15
18
17
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Stratford, the current global analytics build covers 361 daily rows from 2024-01-02 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.