Current Air Quality Index Readings for Ontario

Thursday, October 23, 2014, 9:00 am

Station Name AQI Category Cause
Barrie8
Fine Particulate Matter PM2.5
Belleville9
Ozone O3
Brampton8
Fine Particulate Matter PM2.5
Brantford8
Fine Particulate Matter PM2.5
Burlington10
Fine Particulate Matter PM2.5
Chatham5
Fine Particulate Matter PM2.5
Cornwall12
Ozone O3
Dorset6
Fine Particulate Matter PM2.5
Grand Bend7
Fine Particulate Matter PM2.5
Guelph8
Fine Particulate Matter PM2.5
Hamilton Downtown10
Fine Particulate Matter PM2.5
Hamilton Mountain8
Ozone O3
Hamilton West8
Fine Particulate Matter PM2.5
Kingston11
Ozone O3
Kitchener9
Fine Particulate Matter PM2.5
London7
Fine Particulate Matter PM2.5
MississaugaN/A
Not Available
Morrisburg10
Ozone O3
Newmarket 10
Fine Particulate Matter PM2.5
North Bay9
Fine Particulate Matter PM2.5
Oakville 7
Fine Particulate Matter PM2.5
Oshawa9
Fine Particulate Matter PM2.5
Ottawa Central7
Ozone O3
Ottawa Downtown7
Fine Particulate Matter PM2.5
Parry Sound9
Fine Particulate Matter PM2.5
Petawawa6
Ozone O3
Peterborough11
Ozone O3
Port Stanley16
Fine Particulate Matter PM2.5
Sarnia6
Fine Particulate Matter PM2.5
Sault Ste Marie9
Fine Particulate Matter PM2.5
St. Catharines8
Fine Particulate Matter PM2.5
Sudbury19
Fine Particulate Matter PM2.5
Thunder BayN/A
Not Available
Tiverton4
Ozone O3
Toronto Downtown7
Fine Particulate Matter PM2.5
Toronto East7
Fine Particulate Matter PM2.5
Toronto North9
Fine Particulate Matter PM2.5
Toronto West8
Fine Particulate Matter PM2.5
Windsor Downtown7
Nitrogen Dioxide NO2
Windsor West9
Nitrogen Dioxide NO2

Air Quality Index (AQI) Categories

AQI Colour
0-15 Very Good Very Good
16-31 Good Good
32-49 Moderate Moderate
50-99 Poor Poor
100+ Very Poor Very Poor

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