SmogRank / World / Canada / British Columbia / October 2025
Most polluted cities in British Columbia, Canada, October 2025
34 cities in British Columbia, Canada ranked by their average PM2.5 over the 31 days. Worst: Quesnel at 7.2 µg/m³, #1,056 of 2,564 cities in the world. Cleanest: Fort St. John at 3.3. 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.
- 1Quesnel 0%
- 2Duncan 0%
- 3Smithers 0%
- 4Prince George 0%
- 5Vernon 0%
- 6Castlegar 0%
- 7Cranbrook 0%
- 8Terrace 0%
- 9Kamloops 0%
- 9Langford 0%
- 11Abbotsford 0%
- 11Campbell River 0%
- 11Richmond 0%
- 11Vancouver 0%
- 15Mission 0%
- 16Chilliwack 0%
- 17Agassiz 0%
- 18Gibsons 0%
- 18Kelowna 0%
- 18Langley 0%
- 18Nanaimo 0%
- 22Burnaby 0%
- 22Squamish 0%
- 22Strawberry Hill 0%
- 25Coquitlam 0%
- 26Delta 0%
- 27North Cowichan 0%
- 28Kitimat 0%
- 28Port Coquitlam 0%
- 30North Vancouver 0%
- 31West Vancouver 0%
- 32Hope 0%
- 33Whistler 0%
- 34Fort St. John 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 2025, smogrank.com/ca/region/british-columbia/history/2025-10 (accessed 7 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.