Large parts of Ontario, including northern and southern regions and the Greater Toronto Area, are under air quality warnings or special statements issued by Environment Canada. This is due to smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta, causing poor air quality and reduced visibility. Residents are advised to limit time outdoors.
Much of Ontario under air quality warnings amid wildfire smoke: Environment Canada
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Large parts of Ontario, including northern and southern regions and the Greater Toronto Area, are under air quality warnings or special statements issued by Environment Canada. This is due to smoke from wildfires burning in Manitoba, Saskatchewan, and Alberta, causing poor air quality and reduced visibility. Residents are advised to limit time outdoors.
Trending- 1 Ongoing: Wildfires burning in Manitoba, Saskatchewan, and Alberta.
- 2 Thursday afternoon (June 5, 2025): Environment Canada issued air quality warnings and statements for much of Ontario.
- 3 Through Friday (June 6, 2025): Air quality statements remain in place.
- Poor air quality and reduced visibility across affected regions
- Potential health risks for residents, especially vulnerable populations
- Advisories for residents to limit outdoor activities
What: Wildfire smoke from Western Canadian provinces is causing poor air quality and reduced visibility across much of Ontario, prompting Environment Canada to issue air quality warnings and special statements.
When: Air quality warnings were placed on Thursday afternoon (June 5, 2025). The special air quality statements are in place through Friday (June 6, 2025).
Where: Ontario, Canada, specifically affecting Fort Hope, Kenora, Sandy Lake, Dryden, Timmins, Windsor, Ottawa, and the Greater Toronto Area. The source wildfires are in Manitoba, Saskatchewan, and Alberta.
Why: Smoke generated by ongoing wildfires in Western Canadian provinces is being transported by atmospheric currents across Ontario, leading to a degradation of air quality.
How: Wildfires produce large amounts of smoke, which travels long distances. Environment Canada monitors air quality levels and issues warnings and statements when concentrations of pollutants from smoke reach hazardous levels.