Ontario Real-time Air Quality Index (AQI) & Pollution Report - Air Matters

Ontario

Canada

2026-07-30 04:00

AQI (US)

Good

PM2.5

μg/m³

4.7

O3

μg/m³

43.1

PM10

μg/m³

18.3

NO2

μg/m³

7.1

CO

μg/m³

0

SO2

μg/m³

0

Weather

17℃

66%

12 kph

0 of 11

Historical Data

Places included

Algoma District

Chatham-Kent Division

Cochrane District

Dufferin County

Durham Regional Municipality

Frontenac County

Greater Sudbury Division

Haldimand County

Haliburton County

Halton Regional Municipality

Hamilton Division

Hastings County

Kawartha Lakes Division

Kenora District

Leeds and Grenville United Counties

Lennox and Addington County

Manitoulin District

Middlesex County

Muskoka District Municipality

Niagara Regional Municipality

Nipissing District

Northumberland County

Ottawa Division

Parry Sound District

Peel Regional Municipality

Peterborough County

Prescott and Russell United Counties

Prince Edward County

Rainy River District

Stormont, Dundas and Glengarry United Counties

Sudbury District

Thunder Bay District

Timiskaming District

Toronto Division

Waterloo Regional Municipality

Wellington County

York Regional Municipality

Data Sources

http://www.airnow.gov/

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