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.

About 86.8K people in these 3 cities breathed unhealthy air on an average day of 2024.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

← Edmonton 44.6K 40K0
Every city in Alberta, Canada ranked for 2024 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Edmonton
    44.6K
  2. 2Calgary
    36.2K
  3. 3Fort McMurray
    6.09K
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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).

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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.