Air Quality Health Index for Ontario
* NOTE: Corrected and/or amended bulletins are listed first *
FLCN21 CWTO 272100 Air Quality Health Index forecast for Ontario issued jointly by Environment Canada and the Province of Ontario at 5:00 p.m. EDT Thursday 27 March 2025 for tonight Friday and Saturday. The next scheduled forecast will be issued at 6:00 a.m. EDT Friday. Toronto Toronto Downtown Toronto East Toronto North Toronto West Mississauga Brampton. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Windsor Windsor Downtown Windsor West. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Chatham. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Sarnia. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Port Stanley. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. London. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Grand Bend. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Tiverton. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Brantford. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Kitchener. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Guelph. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. St. Catharines. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Hamilton Hamilton Downtown Hamilton Mountain Hamilton West. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Burlington. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Oakville. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Milton. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 3 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 3 or low risk. Oshawa. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Newmarket. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Barrie. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Peterborough. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Dorset. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Parry Sound. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Belleville. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Kingston. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Cornwall. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 3 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Ottawa. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Gatineau. Tonight..Maximum Air Quality Health Index 3 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. North Bay. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Sudbury. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Sault Ste. Marie. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Thunder Bay. Tonight..Maximum Air Quality Health Index 2 or low risk. Friday..Maximum Air Quality Health Index 2 or low risk. Friday night..Maximum Air Quality Health Index 2 or low risk. Saturday..Maximum Air Quality Health Index 2 or low risk. Air Quality Health Index Scale: 1-3 Low health risk 4-6 Moderate health risk 7-10 High health risk Above 10 Very high health risk For more information, consult www.airhealth.ca End $$$$^^
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