Williams Lake AQI Trends
Williams Lake AQI was measured across 2024-2025, with a trend delta of n/a AQI points. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in British Columbia, Canada.
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Average EPA AQI
16
Rank 158 of 158 cities by average AQI
PM2.5
2.9
ug/m3 annualized city average
Seasonality
August
Cleanest: June
Health indicator
0.1
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Williams Lake
21
21
18
12
12
10
20
25
15
12
15
15
What this trends page measures
Compare yearly air-quality direction, best years, worst years, and trend deltas.
For Williams Lake, 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.