SmogRank / World / Canada / Alberta / 2026
Most polluted cities in Alberta, Canada, 2026
14 cities in Alberta, Canada ranked by their average PM2.5 so far (278 of 365 days); 14 above the WHO annual guideline (5.0 µg/m³). Worst: Calgary at 9.9 µg/m³, #1,019 of 2,745 cities in the world. Cleanest: Grand Centre at 6.0. 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.
- 1Calgary 3%
- 2Grande Prairie 2%
- 3Lethbridge 2%
- 4Fort McMurray 2%
- 5Fort Saskatchewan 2%
- 6Airdrie 2%
- 7St. Albert 2%
- 8Grand Centre 2%
- 9Edmonton 2%
- 10Red Deer 1%
- 11Drayton Valley 1%
- 12Sherwood Park 1%
- 13Medicine Hat 1%
- 14Edson 1%
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 Alberta, Canada, PM2.5, 2026 (so far), smogrank.com/ca/region/alberta/history/2026 (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.