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U.S. Domestic8h 45m ago
Toronto was ranked as having the worst air quality globally, surpassing other major cities.
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Toronto
Who
Not specified
What
Toronto was ranked as having the worst air quality globally, surpassing other major cities.
When
Thu, 16 Jul 2026 02:35:26 GMT · 8h 45m ago
Where
Toronto ·
Why
Wildfire smoke caused the severe air quality issues.
The Frontline Impact
How this affects you
Toronto experienced the worst air quality on Earth. Other US cities are also threatened by the smoke.
Story chain
1 event in this threadNo related history yet - this is the origin event.