Ontario wildfires push Toronto into the world's worst air quality
TL;DR
Wildfire smoke from northwestern Ontario blankets Toronto, with IQAir naming the city’s air quality the worst in the world; the haze extends into the northeastern United States, triggering health warnings and evacuations as Canada reports roughly 800 active fires (hundreds out of control) and forecasts suggest smoky conditions could persist into Thursday.
- Toronto engulfed by wildfire smoke as US cities threatened Al Jazeera
- Air quality alert issued as wildfire smoke moves into Philadelphia region 6abc Philadelphia
- Alert Day: Dangerous Air Quality for Pennsylvania WTAE
- Canadian wildfire smoke returns to NYC, Tri-State: Air quality alerts and live updates ABC7 New York
- Massachusetts Air Quality Alert – July 15, 2026 Boston University
Want the full story? Read the original reporting
Read on Al Jazeera