Ontario - Air Quality Health Index - Summary

AQHIScale
Forecast Regions

This table shows a summary of current Air Quality Health Index values and forecast maximums1
Location and sub-locations Observed Conditions Forecast Maximums
Thursday night Friday Friday night Saturday
Barrie 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Belleville 3
Low Risk		 4
Moderate Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Brampton 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Brantford 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Burlington 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Chatham 4
Moderate Risk		 4
Moderate Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Cornwall 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Dorset 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Grand Bend 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Guelph 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Hamilton 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Kingston 4
Moderate Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Kitchener 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
London 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Milton 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Mississauga 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Newmarket 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
North Bay 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Oakville 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Oshawa 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Ottawa 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Parry Sound 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Peterborough 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Port Stanley 4
Moderate Risk		 4
Moderate Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Sarnia 4
Moderate Risk		 4
Moderate Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Sault Ste. Marie 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
St. Catharines 4
Moderate Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Sudbury 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Thunder Bay 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Tiverton 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Toronto 3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
4
Moderate Risk		 4
Moderate Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
3
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Windsor 4
Moderate Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
4
Moderate Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
4
Moderate Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk

1. Forecast issued at: 5:00 PM EDT Thursday 12 June 2025

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