SmogRank / World / Canada / British Columbia / October 2023
Most polluted cities in British Columbia, Canada, October 2023
40 cities in British Columbia, Canada ranked by their average PM2.5 over the 31 days. Worst: Smithers at 9.6 µg/m³, #365 of 1,965 cities in the world. Cleanest: Williams Lake at 2.9. 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.
- 1Smithers 0%
- 2Duncan 0%
- 2Quesnel 0%
- 4Cranbrook 0%
- 5Terrace 0%
- 6Port Alberni 0%
- 7Castlegar 0%
- 8Vernon 0%
- 9Prince George 0%
- 10Courtenay 0%
- 11Langford 0%
- 12Kamloops 0%
- 13Fort St. John 0%
- 14Harewood 0%
- 15Squamish 0%
- 15Victoria 0%
- 17Creston 0%
- 18Gibsons 0%
- 19Kitimat 0%
- 20Kelowna 0%
- 20Penticton 0%
- 20Vancouver 0%
- 23Abbotsford 0%
- 24Agassiz 0%
- 24Langley 0%
- 24Strawberry Hill 0%
- 27Chilliwack 0%
- 27North Cowichan 0%
- 29Campbell River 0%
- 29Richmond 0%
- 31West Vancouver 0%
- 32Burnaby 0%
- 33Coquitlam 0%
- 34Delta 0%
- 35North Vancouver 0%
- 36Hope 0%
- 36Nanaimo 0%
- 36Port Coquitlam 0%
- 39Whistler 0%
- 40Williams Lake 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, October 2023, smogrank.com/ca/region/british-columbia/history/2023-10 (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.