SmogRank / World / Canada / British Columbia / December 2025
Most polluted cities in British Columbia, Canada, December 2025
38 cities in British Columbia, Canada ranked by their average PM2.5 over the 31 days. Worst: Williams Lake at 8.6 µg/m³, #1,642 of 2,960 cities in the world. Cleanest: West Vancouver at 2.5. 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.
- 1Williams Lake 3%
- 2Cranbrook 0%
- 3Quesnel 0%
- 4Port Alberni 0%
- 5Kamloops 0%
- 6Duncan 0%
- 6Smithers 0%
- 6Vernon 0%
- 9Castlegar 0%
- 10Kelowna 0%
- 11Campbell River 0%
- 12Prince George 0%
- 13Terrace 0%
- 14Victoria 0%
- 15Vancouver 0%
- 16Langford 0%
- 16Richmond 0%
- 18Whistler 0%
- 19Gibsons 0%
- 20Burnaby 0%
- 21Fort St. John 0%
- 21Kitimat 0%
- 21Strawberry Hill 0%
- 21Harewood 0%
- 25Nanaimo 0%
- 26Langley 0%
- 27Coquitlam 0%
- 27Delta 0%
- 29Abbotsford 0%
- 30Mission 0%
- 31Agassiz 0%
- 31Chilliwack 0%
- 33North Vancouver 0%
- 34Port Coquitlam 0%
- 34Squamish 0%
- 36Hope 0%
- 36North Cowichan 0%
- 38West Vancouver 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, December 2025, smogrank.com/ca/region/british-columbia/history/2025-12 (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.