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

Monday  Monday night  Tuesday  
Barrie  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Belleville  2 Low Risk 
2 Low Risk 
2 Low Risk 
2 Low Risk 
Brampton  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Brantford  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Burlington  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Chatham  3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Cornwall  2 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
Dorset  2 Low Risk 
2 Low Risk 
2 Low Risk 
2 Low Risk 
Grand Bend  3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Guelph  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Hamilton  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
N/A  3 Low Risk 
3 Low Risk 
3 Low Risk 

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

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

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

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

Parry Sound  2 Low Risk 
2 Low Risk 
2 Low Risk 
2 Low Risk 
Petawawa  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 
Port Stanley  3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Sarnia  3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Sault Ste. Marie  2 Low Risk 
2 Low Risk 
2 Low Risk 
2 Low Risk 
St. Catharines  2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
Sudbury  2 Low Risk 
2 Low Risk 
2 Low Risk 
2 Low Risk 
Thunder Bay  2 Low Risk 
2 Low Risk 
3 Low Risk 
3 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 
3 Low Risk 
2 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 

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

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

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

Windsor  3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 

3 Low Risk 
3 Low Risk 
3 Low Risk 
3 Low Risk 
1. Forecast issued at: 6:00 AM EDT Monday 24 April 2017