Ontario  Air Quality Health Index  Provincial Summary
Forecast Regions
Location and sublocations  Current Observation  Forecast Maximums  

Wednesday  Wednesday night  Thursday  
Barrie  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Belleville  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Brampton  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
Brantford  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Burlington  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
Chatham  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Cornwall  1 Low Risk 
2 Low Risk 
2 Low Risk 
3 Low Risk 
Dorset  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Grand Bend  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Guelph  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Hamilton  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

Kingston  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Kitchener  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
London  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Mississauga  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
Newmarket  2 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
North Bay  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Oakville  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
Oshawa  1 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Ottawa  1 Low Risk 
2 Low Risk 
2 Low Risk 
3 Low Risk 
1 Low Risk 
2 Low Risk 
2 Low Risk 
3 Low Risk 

1 Low Risk 
2 Low Risk 
2 Low Risk 
3 Low Risk 

Parry Sound  2 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Petawawa  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Peterborough  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Port Stanley  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Sarnia  2 Low Risk 
4 Moderate Risk 
4 Moderate Risk 
4 Moderate Risk 
Sault Ste. Marie  1 Low Risk 
3 Low Risk 
3 Low Risk 
2 Low Risk 
St. Catharines  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
Sudbury  1 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Thunder Bay  2 Low Risk 
3 Low Risk 
3 Low Risk 
2 Low Risk 
Tiverton  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Toronto  2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

2 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

3 Low Risk 
3 Low Risk 
3 Low Risk 
4 Moderate Risk 

Windsor  3 Low Risk 
4 Moderate Risk 
4 Moderate Risk 
4 Moderate Risk 
3 Low Risk 
4 Moderate Risk 
4 Moderate Risk 
4 Moderate Risk 

3 Low Risk 
4 Moderate Risk 
4 Moderate Risk 
4 Moderate Risk 
1. Forecast issued at: 6:00 AM EDT Wednesday 28 June 2017