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
Saturday night Sunday Sunday night Monday
Barrie 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Belleville 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Brampton 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Brantford 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Burlington 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Chatham 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Cornwall 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Dorset 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Grand Bend 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Guelph 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Hamilton 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Kingston 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Kitchener 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
London 1
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Milton 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Mississauga 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Newmarket 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
North Bay 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Oakville 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Oshawa 1
Low Risk		 2
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		 3
Low Risk		 3
Low Risk		 2
Low Risk
Peterborough 1
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk
Port Stanley 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Sarnia 2
Low Risk		 3
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Sault Ste. Marie 3
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
St. Catharines 2
Low Risk		 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk
Sudbury 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Thunder Bay 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Tiverton 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk		 2
Low Risk
Toronto 2
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk
1
Low Risk		 2
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk
1
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
Windsor 2
Low Risk		 3
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk
2
Low Risk		 3
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk
N/A 3
Low Risk		 2
Low Risk		 3
Low Risk		 3
Low Risk

1. Forecast issued at: 5:00 PM EDT Saturday 10 October 2026

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