1. North America
  2. Canada
  3. Ontario

Ontario

Canada

2026-04-28 03:00
AQI (US)
Good
Pollutants
O3
μg/m³
91.4
PM2.5
μg/m³
4.7
PM10
μg/m³
11.7
NO2
μg/m³
8.8
CO
μg/m³
0
SO2
μg/m³
0
Weather
  • ℃
  • ℉
5℃
100%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Algoma District
AQI 49
Brant County
AQI 28
Brantford
AQI 34
Bruce County
AQI 40
Chatham-Kent Division
AQI 47
Cochrane District
AQI 41
Dufferin County
AQI 56
Durham Regional Municipality
AQI 45
Elgin County
AQI 46
Essex County
AQI 37
Frontenac County
AQI 39
Greater Sudbury Division
AQI 43
Grey County
AQI 58
Haldimand County
AQI 54
Haliburton County
AQI 52
Halton Regional Municipality
AQI 38
Hamilton Division
AQI 43
Hastings County
AQI 43
Huron County
AQI 38
Kawartha Lakes Division
AQI 23
Kenora District
AQI 33
Lambton County
AQI 44
Lanark County
AQI 51
Leeds and Grenville United Counties
AQI 56
Lennox and Addington County
AQI 77
Manitoulin District
AQI 60
Middlesex County
AQI 38
Muskoka District Municipality
AQI 45
Niagara Regional Municipality
AQI 41
Nipissing District
AQI 43
Norfolk County
AQI 28
Northumberland County
AQI 65
Ottawa Division
AQI 43
Oxford County
AQI 25
Parry Sound District
AQI 45
Peel Regional Municipality
AQI 40
Perth County
AQI 51
Peterborough County
AQI 43
Prescott and Russell United Counties
AQI 2
Prince Edward County
AQI 17
Rainy River District
AQI 58
Renfrew County
AQI 53
Simcoe County
AQI 43
Stormont, Dundas and Glengarry United Counties
AQI 37
Sudbury District
AQI 46
Thunder Bay District
AQI 42
Timiskaming District
AQI 48
Toronto Division
AQI 39
Waterloo Regional Municipality
AQI 38
Wellington County
AQI 38
York Regional Municipality
AQI 41
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Hearst
AQI 52
Manitouwadge
AQI 51
Attawapiskat
AQI 39
Marathon
AQI 56
Kapuskasing
AQI 12
Moonbeam
AQI 41
Moosonee
AQI 55
Wawa
AQI 53
Cochrane
AQI 49
Timmins
AQI 51
Thunder Bay
AQI 42