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Squamish Seasonal Pollution

Squamish usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in British Columbia, Canada.

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Average EPA AQI

26

Rank 107 of 158 cities by average AQI

PM2.5

4.8

ug/m3 annualized city average

Seasonality

August

Cleanest: December

Health indicator

0.2

cigarette-equivalent per day

Yearly EPA AQI trend

0501002024Squamish

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec
Squamish
18
22
30
23
22
23
39
40
33
22
22
17

What this seasonality page measures

Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.

For Squamish, the current global analytics build covers 365 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.

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