Current Air Quality Index Readings for Ontario

Wednesday, February 22, 2012, 11:00 pm

Station Name	AQI	Cause
Barrie	15	Fine Particulate Matter PM_2.5
Belleville	20	Ozone O₃
Brampton	9	Ozone O₃
Brantford	20	Ozone O₃
Burlington	15	Ozone O₃
Chatham	18	Ozone O₃
Cornwall	21	Ozone O₃
Dorset	16	Ozone O₃
Grand Bend	12	Ozone O₃
Guelph	13	Ozone O₃
Hamilton Downtown	14	Ozone O₃
Hamilton Mountain	18	Ozone O₃
Hamilton West	17	Ozone O₃
Kingston	21	Ozone O₃
Kitchener	13	Ozone O₃
London	12	Ozone O₃
Mississauga	12	Ozone O₃
Morrisburg	20	Ozone O₃
Newmarket	10	Ozone O₃
North Bay	22	Ozone O₃
Oakville	14	Ozone O₃
Oshawa	12	Ozone O₃
Ottawa Central	14	Ozone O₃
Ottawa Downtown	9	Nitrogen Dioxide NO₂
Parry Sound	23	Ozone O₃
Petawawa	21	Ozone O₃
Peterborough	10	Fine Particulate Matter PM_2.5
Port Stanley	22	Ozone O₃
Sarnia	12	Fine Particulate Matter PM_2.5
Sault Ste Marie	13	Ozone O₃
St. Catharines	18	Ozone O₃
Sudbury	18	Ozone O₃
Thunder Bay	18	Ozone O₃
Tiverton	18	Ozone O₃
Toronto Downtown	14	Ozone O₃
Toronto East	10	Fine Particulate Matter PM_2.5
Toronto North	11	Nitrogen Dioxide NO₂
Toronto West	8	Nitrogen Dioxide NO₂
Windsor Downtown	9	Ozone O₃
Windsor West	11	Ozone O₃

Note: AQI readings on this web page are based on automatically polled data and have not undergone final verification.

Air Quality Index (AQI)