Toronto engulfed by wildfire smoke as US cities threatened
Author: AFP and ReutersPublished on: July 16, 2026Country: Canada
Environment & Climate

Wildfire smoke from northwestern Ontario caused Toronto to rank as the world's most polluted city on Wednesday, according to IQAir. The Air Quality Health Index reached 10+ (very high risk). Northeastern US states including New York issued health alerts. A Canadian National train was evacuated near Armstrong, Ontario.
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