SmogRank / World / Canada / Alberta / 2024
Most polluted cities in Alberta, Canada, 2024
14 cities in Alberta, Canada ranked by their average PM2.5 over the 366 days; 14 above the WHO annual guideline (5.0 µg/m³). Worst: Fort McMurray at 13.8 µg/m³, #286 of 2,052 cities in the world. Cleanest: Lethbridge at 6.4. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for one of these days. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.
OpenAQ's archive, where our readings come from, has almost none from Canada for March 20, 2024: cities in Canada are averaged over their other days. Why.
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 McMurray 9%
- 2Fort Saskatchewan 5%
- 3Grand Centre 5%
- 4Edmonton 4%
- 5Grande Prairie 4%
- 6Drayton Valley 3%
- 7Calgary 3%
- 8St. Albert 3%
- 9Sherwood Park 2%
- 10Airdrie 2%
- 11Red Deer 2%
- 12Edson 2%
- 13Medicine Hat 1%
- 14Lethbridge 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
All cities in the world, 2024 · All cities in Canada, 2024 · Alberta now
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SmogRank, most polluted cities in Alberta, Canada, PM2.5, 2024, smogrank.com/ca/region/alberta/history/2024 (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.