1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2025-12-30 22:00
AQI (China)
Excellent
Pollutants
O3
μg/m³
81.4
PM10
μg/m³
13
NO2
μg/m³
4.9
PM2.5
μg/m³
1.6
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
-20℃
82%
22 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Algoma District
AQI 27
Brant County
AQI 3
Brantford
AQI 25
Bruce County
AQI 28
Chatham-Kent Division
AQI 27
Cochrane District
AQI 27
Dufferin County
AQI 22
Durham Regional Municipality
AQI 28
Elgin County
AQI 27
Essex County
AQI 24
Frontenac County
AQI 26
Greater Sudbury Division
AQI 26
Grey County
AQI 22
Haldimand County
AQI 16
Haliburton County
AQI 26
Halton Regional Municipality
AQI 26
Hamilton Division
AQI 26
Hastings County
AQI 28
Huron County
AQI 29
Kawartha Lakes Division
AQI 3
Kenora District
AQI 22
Lambton County
AQI 25
Lanark County
AQI 14
Leeds and Grenville United Counties
AQI 27
Lennox and Addington County
AQI 3
Manitoulin District
AQI 18
Middlesex County
AQI 25
Muskoka District Municipality
AQI 27
Niagara Regional Municipality
AQI 26
Nipissing District
AQI 24
Norfolk County
AQI 3
Northumberland County
AQI 25
Ottawa Division
AQI 24
Oxford County
AQI 3
Parry Sound District
AQI 27
Peel Regional Municipality
AQI 27
Perth County
AQI 25
Peterborough County
AQI 28
Prescott and Russell United Counties
AQI 1
Prince Edward County
AQI 3
Rainy River District
AQI 23
Renfrew County
AQI 17
Simcoe County
AQI 29
Stormont, Dundas and Glengarry United Counties
AQI 24
Sudbury District
AQI 16
Thunder Bay District
AQI 21
Timiskaming District
AQI 16
Toronto Division
AQI 22
Waterloo Regional Municipality
AQI 26
Wellington County
AQI 27
York Regional Municipality
AQI 27
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 13
Manitouwadge
AQI 16
Attawapiskat
AQI 12
Marathon
AQI 21
Kapuskasing
AQI 2
Moonbeam
AQI 27
Moosonee
AQI 18
Wawa
AQI 20
Cochrane
AQI 13
Timmins
AQI 14
Thunder Bay
AQI 21