SmogRank / Countries / Canada / Alberta
Most polluted cities in Alberta, Canada
10 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Edmonton at 7.3 µg/m³, #775 in the world.
10 good
- 1Edmonton 7.3
- 2Red Deer 7.3
- 3Calgary 7.2
- 4Airdrie 5.5
- 5Lethbridge 5.3
- 6Sherwood Park 5.0
- 7St. Albert 4.9
- 8Medicine Hat 4.8
- 9Grande Prairie 4.6
- 10Fort McMurray 4.0
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
Alberta cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Spruce Grove | ≈ 3 µg/m³ |
| Chestermere | ≈ 10 µg/m³ |
| Cochrane | ≈ 9 µg/m³ |
| Lloydminster | ≈ 2 µg/m³ |
| Okotoks | ≈ 6 µg/m³ |
| Camrose | ≈ 3 µg/m³ |
| Stony Plain | ≈ 3 µg/m³ |
| Sylvan Lake | ≈ 5 µg/m³ |
| Leduc | ≈ 3 µg/m³ |
Updated 2026-10-01 17:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.