Yellowknife Seasonal Pollution
Yellowknife usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in June. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Northwest Territories, Canada.
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Average EPA AQI
48
Rank 5 of 158 cities by average AQI
PM2.5
13.2
ug/m3 annualized city average
Seasonality
July
Cleanest: June
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Yellowknife
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-
-
-
-
18
71
63
49
39
46
45
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Yellowknife, the current global analytics build covers 212 daily rows from 2024-06-04 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.