1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2026-01-21 03:00
AQI (US)
Good
Pollutants
PM10
μg/m³
34
O3
μg/m³
67
PM2.5
μg/m³
4.6
NO2
μg/m³
17.4
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
-24℃
98%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 33
Brant County
AQI 23
Brantford
AQI 30
Bruce County
AQI 37
Chatham-Kent Division
AQI 26
Cochrane District
AQI 27
Dufferin County
AQI 55
Durham Regional Municipality
AQI 36
Elgin County
AQI 33
Essex County
AQI 42
Frontenac County
AQI 33
Greater Sudbury Division
AQI 28
Grey County
AQI 55
Haldimand County
AQI 26
Haliburton County
AQI 42
Halton Regional Municipality
AQI 31
Hamilton Division
AQI 29
Hastings County
AQI 37
Huron County
AQI 28
Kawartha Lakes Division
AQI 39
Kenora District
AQI 34
Lambton County
AQI 28
Lanark County
AQI 49
Leeds and Grenville United Counties
AQI 35
Lennox and Addington County
AQI 23
Manitoulin District
AQI 55
Middlesex County
AQI 29
Muskoka District Municipality
AQI 35
Niagara Regional Municipality
AQI 34
Nipissing District
AQI 28
Norfolk County
AQI 23
Northumberland County
AQI 32
Ottawa Division
AQI 33
Oxford County
AQI 26
Parry Sound District
AQI 39
Peel Regional Municipality
AQI 30
Perth County
AQI 43
Peterborough County
AQI 39
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 17
Rainy River District
AQI 57
Renfrew County
AQI 53
Simcoe County
AQI 34
Stormont, Dundas and Glengarry United Counties
AQI 36
Sudbury District
AQI 53
Thunder Bay District
AQI 25
Timiskaming District
AQI 51
Toronto Division
AQI 42
Waterloo Regional Municipality
AQI 28
Wellington County
AQI 32
York Regional Municipality
AQI 44
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 27
Moosonee
AQI 57
Wawa
AQI 58
Cochrane
AQI 49
Timmins
AQI 50
Thunder Bay
AQI 25