Wildfire smoke from Ontario chokes Toronto — world's worst air quality on July 15

More than 100 active wildfires burning in northern Ontario sent thick smoke over Toronto, which recorded the world's worst air quality on July 15, 2026. City authorities urged residents to stay indoors as smog blanketed the skyline. Many people reported allergic reactions caused by the heavy smoke.

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🌍 World Ontario wildfire smoke blankets Toronto with world's worst air quality, drifts to US France 24 · 10d ago 🌍 World Over 900 wildfires rage across Canada, scorching 3 million hectares The Guardian World · 2d ago 🌍 World 900+ Canadian Wildfires Set to Blanket US in Smoke Again The Independent World · 6d ago

More on this topic

🌍 World Ontario wildfire smoke blankets Toronto with world's worst air quality, drifts to US France 24 · 10d ago 🌍 World Over 900 wildfires rage across Canada, scorching 3 million hectares The Guardian World · 2d ago 🌍 World 900+ Canadian Wildfires Set to Blanket US in Smoke Again The Independent World · 6d ago