1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2025-12-05 22:00
AQI (US)
Good
Pollutants
PM2.5
μg/m³
8.4
O3
μg/m³
64.2
PM10
μg/m³
28
NO2
μg/m³
17.6
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
-13℃
96%
4 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 45
Brant County
AQI 52
Brantford
AQI 52
Bruce County
AQI 52
Chatham-Kent Division
AQI 62
Cochrane District
AQI 26
Dufferin County
AQI 56
Durham Regional Municipality
AQI 49
Elgin County
AQI 44
Essex County
AQI 77
Frontenac County
AQI 37
Greater Sudbury Division
AQI 34
Grey County
AQI 56
Haldimand County
AQI 61
Haliburton County
AQI 42
Halton Regional Municipality
AQI 49
Hamilton Division
AQI 49
Hastings County
AQI 36
Huron County
AQI 58
Kawartha Lakes Division
AQI 28
Kenora District
AQI 25
Lambton County
AQI 59
Lanark County
AQI 49
Leeds and Grenville United Counties
AQI 38
Lennox and Addington County
AQI 23
Manitoulin District
AQI 55
Middlesex County
AQI 61
Muskoka District Municipality
AQI 36
Niagara Regional Municipality
AQI 39
Nipissing District
AQI 29
Norfolk County
AQI 52
Northumberland County
AQI 51
Ottawa Division
AQI 43
Oxford County
AQI 56
Parry Sound District
AQI 35
Peel Regional Municipality
AQI 48
Perth County
AQI 58
Peterborough County
AQI 28
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 23
Rainy River District
AQI 57
Renfrew County
AQI 53
Simcoe County
AQI 37
Stormont, Dundas and Glengarry United Counties
AQI 25
Sudbury District
AQI 53
Thunder Bay District
AQI 42
Timiskaming District
AQI 52
Toronto Division
AQI 54
Waterloo Regional Municipality
AQI 52
Wellington County
AQI 51
York Regional Municipality
AQI 51
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 50
Manitouwadge
AQI 53
Attawapiskat
AQI 46
Marathon
AQI 60
Kapuskasing
AQI 23
Moonbeam
AQI 26
Moosonee
AQI 57
Wawa
AQI 58
Cochrane
AQI 49
Timmins
AQI 50
Thunder Bay
AQI 21