Ontario Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Ontario
Check the air quality level of thecities in Ontario
Ontario
Ontario's Cities
Real-time Air Pollution Level
Canada's Metro Cities
Air Quality Index
Most Polluted Cities 2026
Canada
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
London, Ontario
Poor
2xabove Standard
2.
Windsor, Ontario
Poor
2xabove Standard
3.
Thunder Bay, Ontario
Moderate
2xabove Standard
4.
Guelph, Ontario
Moderate
2xabove Standard
5.
Chatham, Ontario
Moderate
2xabove Standard
6.
Brantford, Ontario
Moderate
2xabove Standard
7.
Waterloo, Ontario
Moderate
2xabove Standard
8.
Burlington, Ontario
Moderate
2xabove Standard
9.
Toronto, Ontario
Moderate
1xabove Standard
10.
Saskatoon, Saskatchewan
Moderate
1xabove Standard
Last Updated: 19 Jul 2026, 12:42 PM
AQI City RankingsAir Quality Solutions For Ontario
Explore the solutions of air quality monitoring & clean air.
Here are some applications that you can go through to find out the solutions.
Ontario's AQI Data Analytics Solutions
Air quality data monitoring platforms
Recent AQI Blogs
Read the latest news
Here are some latest blogs that you can go through to find out more air pollution.









































