1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2026-07-23 22:00
CAQI (Europe)
Low
Pollutants
O3
μg/m³
81.9
PM10
μg/m³
14
PM2.5
μg/m³
5.3
SO2
μg/m³
6.9
NO2
μg/m³
3.3
CO
μg/m³
0
Weather
  • ℃
  • ℉
22℃
52%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • O3
  • PM10
  • PM2.5
  • SO2
  • NO2
  • CO
Places included
Algoma District
AQI 33
Brant County
AQI 7
Brantford
AQI 41
Bruce County
AQI 32
Chatham-Kent Division
AQI 37
Cochrane District
AQI 27
Dufferin County
AQI 17
Durham Regional Municipality
AQI 40
Elgin County
AQI 41
Essex County
AQI 44
Frontenac County
AQI 31
Greater Sudbury Division
AQI 32
Grey County
AQI 7
Haldimand County
AQI 24
Haliburton County
AQI 18
Halton Regional Municipality
AQI 37
Hamilton Division
AQI 37
Hastings County
AQI 42
Huron County
AQI 36
Kawartha Lakes Division
AQI 7
Kenora District
AQI 34
Lambton County
AQI 38
Lanark County
AQI 12
Leeds and Grenville United Counties
AQI 11
Lennox and Addington County
AQI 7
Manitoulin District
AQI 6
Middlesex County
AQI 37
Muskoka District Municipality
AQI 31
Niagara Regional Municipality
AQI 40
Nipissing District
AQI 32
Norfolk County
AQI 7
Northumberland County
AQI 13
Ottawa Division
AQI 32
Oxford County
AQI 7
Parry Sound District
AQI 32
Peel Regional Municipality
AQI 35
Perth County
AQI 20
Peterborough County
AQI 31
Prescott and Russell United Counties
AQI 15
Prince Edward County
AQI 9
Rainy River District
AQI 26
Renfrew County
AQI 10
Simcoe County
AQI 32
Stormont, Dundas and Glengarry United Counties
AQI 30
Sudbury District
AQI 25
Thunder Bay District
AQI 23
Timiskaming District
AQI 15
Toronto Division
AQI 33
Waterloo Regional Municipality
AQI 34
Wellington County
AQI 35
York Regional Municipality
AQI 30
Data Sources
http://www.airnow.gov/

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Cities Nearby

Hearst
AQI 33
Manitouwadge
AQI 22
Attawapiskat
AQI 20
Marathon
AQI 15
Kapuskasing
AQI 27
Moonbeam
AQI 27
Moosonee
AQI 16
Wawa
AQI 21
Cochrane
AQI 22
Timmins
AQI 25
Thunder Bay
AQI 27