SmogRank / World / North America / Canada / Saskatchewan
Most polluted cities in Saskatchewan, Canada
5 measured cities, this year; 5 above the WHO annual guideline. Worst: Estevan at 8.8 µg/m³, #1,421 in the world.
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.
- 1Estevan 2%
- 2Swift Current 1%
- 3Prince Albert 1%
- 4Regina 1%
- 5Saskatoon 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
Estimated: cities without a monitor
Saskatchewan 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 |
|---|---|
| Moose Jaw | ≈ 5 µg/m³ |
| North Battleford | ≈ 4 µg/m³ |
| Yorkton | ≈ 2 µg/m³ |
Bad-air episodes in Saskatchewan
- North-western United States and Canada, July and August 202616 July to 4 August 2026, 20 days118 cities168 µg/m³peak, Prineville
- North-western Canada and United States, September 20256 to 13 September 2025, 8 days57 cities103 µg/m³peak, Ephrata
- North-western United States and Canada, August and September 202531 August to 7 September 2025, 8 days94 cities173 µg/m³peak, Squamish
- Western Canada and United States, August 20258 to 10 August 2025, 3 days12 cities117 µg/m³peak, Estevan
- North-western Canada and United States, 19 to 22 July 20254 days13 cities204 µg/m³peak, Prince Albert
- North-western Canada and United States, 14 to 17 July 20254 days14 cities116 µg/m³peak, Saskatoon
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
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SmogRank, most polluted cities in Saskatchewan, Canada, PM2.5, this year to 6 Oct 2026, 22:00 UTC, smogrank.com/ca/region/saskatchewan?w=year.
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.
Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.