1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2026-09-23 02:00
AQI (US)
Good
Pollutants
O3
μg/m³
46.4
PM2.5
μg/m³
3
PM10
μg/m³
17
NO2
μg/m³
7.7
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
11℃
73%
11 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 22
Brant County
AQI 28
Brantford
AQI 28
Bruce County
AQI 17
Chatham-Kent Division
AQI 29
Cochrane District
AQI 12
Dufferin County
AQI 15
Durham Regional Municipality
AQI 19
Elgin County
AQI 29
Essex County
AQI 29
Frontenac County
AQI 24
Greater Sudbury Division
AQI 19
Grey County
AQI 9
Haldimand County
AQI 17
Haliburton County
AQI 7
Halton Regional Municipality
AQI 23
Hamilton Division
AQI 26
Hastings County
AQI 20
Huron County
AQI 21
Kawartha Lakes Division
AQI 12
Kenora District
AQI 27
Lambton County
AQI 30
Lanark County
AQI 19
Leeds and Grenville United Counties
AQI 18
Lennox and Addington County
AQI 23
Manitoulin District
AQI 9
Middlesex County
AQI 26
Muskoka District Municipality
AQI 12
Niagara Regional Municipality
AQI 22
Nipissing District
AQI 26
Norfolk County
AQI 28
Northumberland County
AQI 11
Ottawa Division
AQI 22
Oxford County
AQI 21
Parry Sound District
AQI 21
Peel Regional Municipality
AQI 19
Perth County
AQI 18
Peterborough County
AQI 18
Prescott and Russell United Counties
AQI 25
Prince Edward County
AQI 17
Rainy River District
AQI 19
Renfrew County
AQI 8
Simcoe County
AQI 20
Stormont, Dundas and Glengarry United Counties
AQI 28
Sudbury District
AQI 11
Thunder Bay District
AQI 13
Timiskaming District
AQI 16
Toronto Division
AQI 17
Waterloo Regional Municipality
AQI 18
Wellington County
AQI 17
York Regional Municipality
AQI 20
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 7
Manitouwadge
AQI 12
Attawapiskat
AQI 8
Marathon
AQI 13
Kapuskasing
AQI 12
Moonbeam
AQI 12
Moosonee
AQI 5
Wawa
AQI 14
Cochrane
AQI 15
Timmins
AQI 16
Thunder Bay
AQI 16