1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2025-12-20 11:00
AQI (US)
Good
Pollutants
O3
μg/m³
65.3
PM2.5
μg/m³
3.2
PM10
μg/m³
13.5
NO2
μg/m³
8.6
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
-20℃
96%
15 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 31
Brant County
AQI 17
Brantford
AQI 28
Bruce County
AQI 32
Chatham-Kent Division
AQI 39
Cochrane District
AQI 34
Dufferin County
AQI 53
Durham Regional Municipality
AQI 26
Elgin County
AQI 38
Essex County
AQI 42
Frontenac County
AQI 31
Greater Sudbury Division
AQI 25
Grey County
AQI 53
Haldimand County
AQI 36
Haliburton County
AQI 38
Halton Regional Municipality
AQI 30
Hamilton Division
AQI 30
Hastings County
AQI 27
Huron County
AQI 34
Kawartha Lakes Division
AQI 12
Kenora District
AQI 32
Lambton County
AQI 52
Lanark County
AQI 49
Leeds and Grenville United Counties
AQI 30
Lennox and Addington County
AQI 12
Manitoulin District
AQI 55
Middlesex County
AQI 29
Muskoka District Municipality
AQI 32
Niagara Regional Municipality
AQI 35
Nipissing District
AQI 21
Norfolk County
AQI 17
Northumberland County
AQI 32
Ottawa Division
AQI 31
Oxford County
AQI 21
Parry Sound District
AQI 31
Peel Regional Municipality
AQI 29
Perth County
AQI 42
Peterborough County
AQI 30
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 17
Rainy River District
AQI 57
Renfrew County
AQI 53
Simcoe County
AQI 38
Stormont, Dundas and Glengarry United Counties
AQI 30
Sudbury District
AQI 53
Thunder Bay District
AQI 32
Timiskaming District
AQI 51
Toronto Division
AQI 29
Waterloo Regional Municipality
AQI 29
Wellington County
AQI 30
York Regional Municipality
AQI 31
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 6
Moonbeam
AQI 34
Moosonee
AQI 57
Wawa
AQI 58
Cochrane
AQI 49
Timmins
AQI 50
Thunder Bay
AQI 32