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  3. Ontario

Ontario

Canada

2026-09-24 02:00
AQI (China)
Excellent
Pollutants
PM10
μg/m³
33.3
O3
μg/m³
46.7
PM2.5
μg/m³
3.2
NO2
μg/m³
8.2
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
14℃
62%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 19
Brant County
AQI 5
Brantford
AQI 17
Bruce County
AQI 16
Chatham-Kent Division
AQI 17
Cochrane District
AQI 14
Dufferin County
AQI 8
Durham Regional Municipality
AQI 17
Elgin County
AQI 16
Essex County
AQI 34
Frontenac County
AQI 15
Greater Sudbury Division
AQI 16
Grey County
AQI 8
Haldimand County
AQI 10
Haliburton County
AQI 7
Halton Regional Municipality
AQI 17
Hamilton Division
AQI 16
Hastings County
AQI 17
Huron County
AQI 15
Kawartha Lakes Division
AQI 5
Kenora District
AQI 23
Lambton County
AQI 19
Lanark County
AQI 9
Leeds and Grenville United Counties
AQI 8
Lennox and Addington County
AQI 5
Manitoulin District
AQI 7
Middlesex County
AQI 15
Muskoka District Municipality
AQI 9
Niagara Regional Municipality
AQI 13
Nipissing District
AQI 11
Norfolk County
AQI 5
Northumberland County
AQI 7
Ottawa Division
AQI 12
Oxford County
AQI 4
Parry Sound District
AQI 15
Peel Regional Municipality
AQI 12
Perth County
AQI 9
Peterborough County
AQI 17
Prescott and Russell United Counties
AQI 8
Prince Edward County
AQI 5
Rainy River District
AQI 3
Renfrew County
AQI 8
Simcoe County
AQI 18
Stormont, Dundas and Glengarry United Counties
AQI 13
Sudbury District
AQI 6
Thunder Bay District
AQI 4
Timiskaming District
AQI 6
Toronto Division
AQI 14
Waterloo Regional Municipality
AQI 15
Wellington County
AQI 15
York Regional Municipality
AQI 15
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 6
Manitouwadge
AQI 8
Attawapiskat
AQI 3
Marathon
AQI 9
Kapuskasing
AQI 5
Moonbeam
AQI 14
Moosonee
AQI 3
Wawa
AQI 12
Cochrane
AQI 5
Timmins
AQI 6
Thunder Bay
AQI 7