Air Quality Index AQI Readings:

1 2013-05-25 11:00:00 2 2013-05-25 11:00:00 3 2013-05-25 11:00:00 4 2013-05-25 11:00:00 5 2013-05-25 11:00:00 6 2013-05-25 11:00:00 7 2013-05-25 11:00:00 8 2013-05-25 11:00:00 9 2013-05-25 11:00:00 10 2013-05-25 11:00:00 11 2013-05-25 11:00:00 12 2013-05-25 11:00:00 13 2013-05-25 11:00:00 14 2013-05-25 11:00:00 15 2013-05-25 11:00:00 16 2013-05-25 11:00:00 17 2013-05-25 11:00:00 18 2013-05-25 11:00:00 19 2013-05-25 11:00:00 20 2013-05-25 11:00:00 21 2013-05-25 11:00:00 22 2013-05-25 11:00:00 23 2013-05-25 11:00:00 24 2013-05-25 11:00:00 25 2013-05-25 11:00:00 26 2013-05-25 11:00:00 27 2013-05-25 11:00:00 28 2013-05-25 11:00:00 29 2013-05-25 11:00:00 30 2013-05-25 11:00:00 31 2013-05-25 11:00:00

January February March April May June July August September October November December

2007 2008 2009 2010 2011 2012 2013

12:00 am 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am 6:00 am 7:00 am 8:00 am 9:00 am 10:00 am 11:00 am 12:00 pm 1:00 pm 2:00 pm 3:00 pm 4:00 pm 5:00 pm 6:00 pm 7:00 pm 8:00 pm 9:00 pm 10:00 pm 11:00 pm

Ontario's Air Quality Index

Air Quality Index AQI Readings for Saturday, May 25, 2013, 11:00 am

The AQI is used as an indicator of ambient air quality based on the following pollutants in our air: Ozone (O₃), Fine Particulate Matter (PM_2.5), Nitrogen Dioxide (NO₂), Carbon Monoxide (CO), Sulphur Dioxide (SO₂), and Total Reduced Sulphur (TRS) Compounds.

Summary: List of Air Quality Readings

Note: The Air Quality data on this web page are based on automatically polled data and have not undergone final verification.

Note: N/A (Not Available) denotes invalid or missing data.