Cambridge Seasonal Pollution
Cambridge usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in November. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Ontario, Canada.
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Average EPA AQI
50
Rank 1 of 158 cities by average AQI
PM2.5
12.2
ug/m3 annualized city average
Seasonality
April
Cleanest: November
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Cambridge
-
-
-
69
47
52
57
58
53
37
37
51
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Cambridge, the current global analytics build covers 224 daily rows from 2024-04-28 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.