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
Tuesday night Wednesday Wednesday night Thursday
Barrie 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Belleville 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Brampton 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 4
Moderate Risk		 3
Low Risk
Brantford 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
Burlington 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
Chatham 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Cornwall 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Dorset 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Grand Bend 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Guelph 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
Hamilton 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Kingston 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Kitchener 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
London 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Milton 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
Mississauga 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 4
Moderate Risk		 3
Low Risk
Newmarket 1
Low Risk		 3
Low Risk		 2
Low Risk		 3
Low Risk		 2
Low Risk
North Bay 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Oakville 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
Oshawa 1
Low Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Ottawa 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Parry Sound 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Peterborough 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Port Stanley 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Sarnia 1
Low Risk		 3
Low 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		 3
Low Risk
St. Catharines 1
Low Risk		 4
Moderate Risk		 2
Low Risk		 3
Low Risk		 2
Low Risk
Sudbury 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Thunder Bay 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Tiverton 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Toronto 1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 4
Moderate Risk		 3
Low Risk		 4
Moderate Risk		 3
Low Risk
Windsor 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

1. Forecast issued at: 6:21 PM EDT Tuesday 29 April 2025

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