Oak Bay Seasonal Pollution
Oak Bay usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in October. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in British Columbia, Canada.
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Average EPA AQI
33
Rank 64 of 158 cities by average AQI
PM2.5
6.8
ug/m3 annualized city average
Seasonality
August
Cleanest: October
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Oak Bay
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-
-
-
-
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38
31
30
32
35
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Oak Bay, the current global analytics build covers 156 daily rows from 2024-07-30 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.