1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2025-12-06 03:00
AQI (US)
Moderate
Pollutants
PM2.5
μg/m³
12.2
PM10
μg/m³
31
O3
μg/m³
64.9
NO2
μg/m³
14.7
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
-12℃
89%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 54
Brant County
AQI 58
Brantford
AQI 58
Bruce County
AQI 68
Chatham-Kent Division
AQI 73
Cochrane District
AQI 24
Dufferin County
AQI 62
Durham Regional Municipality
AQI 58
Elgin County
AQI 59
Essex County
AQI 97
Frontenac County
AQI 36
Greater Sudbury Division
AQI 39
Grey County
AQI 62
Haldimand County
AQI 52
Haliburton County
AQI 50
Halton Regional Municipality
AQI 57
Hamilton Division
AQI 54
Hastings County
AQI 39
Huron County
AQI 69
Kawartha Lakes Division
AQI 50
Kenora District
AQI 30
Lambton County
AQI 74
Lanark County
AQI 49
Leeds and Grenville United Counties
AQI 42
Lennox and Addington County
AQI 34
Manitoulin District
AQI 55
Middlesex County
AQI 68
Muskoka District Municipality
AQI 50
Niagara Regional Municipality
AQI 51
Nipissing District
AQI 45
Norfolk County
AQI 58
Northumberland County
AQI 52
Ottawa Division
AQI 41
Oxford County
AQI 63
Parry Sound District
AQI 52
Peel Regional Municipality
AQI 58
Perth County
AQI 61
Peterborough County
AQI 50
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 39
Rainy River District
AQI 57
Renfrew County
AQI 53
Simcoe County
AQI 55
Stormont, Dundas and Glengarry United Counties
AQI 28
Sudbury District
AQI 53
Thunder Bay District
AQI 27
Timiskaming District
AQI 52
Toronto Division
AQI 63
Waterloo Regional Municipality
AQI 64
Wellington County
AQI 61
York Regional Municipality
AQI 63
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 12
Moonbeam
AQI 24
Moosonee
AQI 57
Wawa
AQI 58
Cochrane
AQI 49
Timmins
AQI 50
Thunder Bay
AQI 25