1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2026-04-28 18:00
AQI (US)
Good
Pollutants
O3
μg/m³
85.8
PM2.5
μg/m³
4.4
PM10
μg/m³
19.3
NO2
μg/m³
6.2
SO2
μg/m³
0.6
CO
μg/m³
0
Weather
  • ℃
  • ℉
1℃
97%
20 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10
  • NO2
  • SO2
  • CO
Places included
Algoma District
AQI 30
Brant County
AQI 28
Brantford
AQI 38
Bruce County
AQI 35
Chatham-Kent Division
AQI 37
Cochrane District
AQI 30
Dufferin County
AQI 57
Durham Regional Municipality
AQI 38
Elgin County
AQI 47
Essex County
AQI 30
Frontenac County
AQI 46
Greater Sudbury Division
AQI 32
Grey County
AQI 58
Haldimand County
AQI 53
Haliburton County
AQI 52
Halton Regional Municipality
AQI 38
Hamilton Division
AQI 40
Hastings County
AQI 46
Huron County
AQI 39
Kawartha Lakes Division
AQI 17
Kenora District
AQI 32
Lambton County
AQI 33
Lanark County
AQI 48
Leeds and Grenville United Counties
AQI 56
Lennox and Addington County
AQI 17
Manitoulin District
AQI 60
Middlesex County
AQI 38
Muskoka District Municipality
AQI 41
Niagara Regional Municipality
AQI 41
Nipissing District
AQI 38
Norfolk County
AQI 28
Northumberland County
AQI 65
Ottawa Division
AQI 47
Oxford County
AQI 28
Parry Sound District
AQI 35
Peel Regional Municipality
AQI 39
Perth County
AQI 52
Peterborough County
AQI 41
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 23
Rainy River District
AQI 58
Renfrew County
AQI 53
Simcoe County
AQI 37
Stormont, Dundas and Glengarry United Counties
AQI 48
Sudbury District
AQI 46
Thunder Bay District
AQI 32
Timiskaming District
AQI 48
Toronto Division
AQI 36
Waterloo Regional Municipality
AQI 36
Wellington County
AQI 38
York Regional Municipality
AQI 34
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 52
Manitouwadge
AQI 51
Attawapiskat
AQI 39
Marathon
AQI 56
Kapuskasing
AQI 12
Moonbeam
AQI 30
Moosonee
AQI 55
Wawa
AQI 54
Cochrane
AQI 49
Timmins
AQI 51
Thunder Bay
AQI 32