Tsawwassen Seasonal Pollution
Tsawwassen usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in May. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in British Columbia, Canada.
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Average EPA AQI
19
Rank 154 of 158 cities by average AQI
PM2.5
3.5
ug/m3 annualized city average
Seasonality
July
Cleanest: May
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Tsawwassen
21
19
20
20
13
17
23
21
16
19
20
22
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Tsawwassen, the current global analytics build covers 366 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.