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Toronto downtown: 2010 History

Air Quality for Toronto downtown Date Time AQI Category Cause Note: AQI readings on this web page are based on automatically polled data and have not undergone final verification. 08-Feb-10 (More Readings) 4:00 PM EST 20 Ozone (O3) 07-Feb-10 (More Readings) 4:00 PM EST 24 Ozone (O3) 06-Feb-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 05-Feb-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 04-Feb-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 03-Feb-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 02-Feb-10 (More Readings) 4:00 PM EST 15 Ozone (O3) 01-Feb-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 31-Jan-10 (More Readings) 4:00 PM EST 20 Ozone (O3) 30-Jan-10 (More Readings) 4:00 PM EST 15 Ozone (O3) 29-Jan-10 (More Readings) 4:00 PM EST 24 Ozone (O3) 28-Jan-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 27-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 26-Jan-10 (More Readings) 4:00 PM EST 9 Ozone (O3) 25-Jan-10 (More Readings) 4:00 PM EST 7 Ozone (O3) 24-Jan-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 23-Jan-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 22-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 21-Jan-10 (More Readings) 4:00 PM EST 13 Ozone (O3) 20-Jan-10 (More Readings) 4:00 PM EST 9 Ozone (O3) 19-Jan-10 (More Readings) 4:00 PM EST 13 Fine Particulate Matter (PM2.5) 18-Jan-10 (More Readings) 4:00 PM EST 13 Fine Particulate Matter (PM2.5) 17-Jan-10 (More Readings) 4:00 PM EST 20 Fine Particulate Matter (PM2.5) 16-Jan-10 (More Readings) 4:00 PM EST 20 Fine Particulate Matter (PM2.5) 15-Jan-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 14-Jan-10 (More Readings) 4:00 PM EST 14 Ozone (O3) 13-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 12-Jan-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 11-Jan-10 (More Readings) 4:00 PM EST 14 Fine Particulate Matter (PM2.5) 10-Jan-10 (More Readings) 4:00 PM EST 22 Ozone (O3) 09-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 08-Jan-10 (More Readings) 4:00 PM EST 20 Ozone (O3) 07-Jan-10 (More Readings) 4:00 PM EST 9 Ozone (O3) 06-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 05-Jan-10 (More Readings) 4:00 PM EST 10 Ozone (O3) 04-Jan-10 (More Readings) 4:00 PM EST 17 Ozone (O3) 03-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 02-Jan-10 (More Readings) 4:00 PM EST 18 Ozone (O3) 01-Jan-10 (More Readings) 4:00 PM EST 16 Ozone (O3)

Air Quality Index (AQI) Categories AQI Colour 0-15 Very Good 16-31 Good 32-49 Moderate 50-99 Poor 100+ Very Poor

Toronto downtown: Today's Air Quality | 2010 History | 2009 History

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