Toronto, Ontario Air Quality

As of 9:27 PM
Air quality index42Good

Air quality is great — a good day to be outside.

Next 24 hours

US AQI
  1. 43Now
  2. 42
  3. 41
  4. 3912 AM
  5. 39
  6. 39
  7. 393 AM
  8. 39
  9. 38
  10. 376 AM
  11. 36
  12. 35
  13. 339 AM
  14. 36
  15. 39
  16. 4112 PM
  17. 43
  18. 44
  19. 453 PM
  20. 44
  21. 44
  22. 436 PM
  23. 41
  24. 39

Air quality outlook

Worst hour each day
  • Today57Moderate
  • Thu 845Good
  • Fri 939Good
  • Sat 1071Moderate
  • Sun 1167Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About Toronto weather

Toronto is in Ontario, Canada at 43.71°, -79.40°. Right now it’s 19° and cloudy; today’s high is 22° with a 35% chance of rain.

Ontario's climate is as vast and varied as the province itself. Southern Ontario enjoys a humid continental climate moderated by the Great Lakes, producing warm, humid summers and cold winters. Northern Ontario experiences subarctic conditions with long, frigid winters and short, cool summers.

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