SmogRank / World / Canada / British Columbia / September 2023
Most polluted cities in British Columbia, Canada, September 2023
40 cities in British Columbia, Canada ranked by their average PM2.5 over the 30 days. Worst: Fort St. John at 41.3 µg/m³, #14 of 2,128 cities in the world. Cleanest: North Cowichan at 3.5. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Fort St. John 30%
- 2Prince George 30%
- 3Quesnel 23%
- 4Kamloops 7%
- 5Williams Lake 7%
- 6Smithers 3%
- 7Vernon 0%
- 8Kelowna 0%
- 9Penticton 0%
- 10Agassiz 0%
- 11Gibsons 0%
- 12Chilliwack 0%
- 13Squamish 0%
- 14Hope 0%
- 15Castlegar 0%
- 16Strawberry Hill 0%
- 17Coquitlam 0%
- 17Cranbrook 0%
- 19Abbotsford 0%
- 19Victoria 0%
- 21Vancouver 0%
- 22Langford 0%
- 23Creston 0%
- 24Duncan 0%
- 25West Vancouver 0%
- 26Langley 0%
- 27Burnaby 0%
- 28Kitimat 0%
- 28North Vancouver 0%
- 30Nanaimo 0%
- 31Courtenay 0%
- 32Port Coquitlam 0%
- 32Harewood 0%
- 34Port Alberni 0%
- 34Richmond 0%
- 36Delta 0%
- 37Whistler 0%
- 38Terrace 0%
- 39Campbell River 0%
- 40North Cowichan 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in British Columbia, Canada, PM2.5, September 2023, smogrank.com/ca/region/british-columbia/history/2023-09 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.