Information: About Air Quality

Questions about Air Quality

• Frequently Asked Questions
• What is an Air Quality Forecast?
• What is the Air Quality Index?
• Where Does Smog Come From?

What you can do to improve our Air Quality

• Spare the Air Actions
• Kids: What you can do
• Smog Alerts and the Ontario Public Service
• Smog Patrol Fact Sheet (PDF)

Ontario's Air Quality Monitoring System

• Monitoring Air Quality
• Monitoring Station Locations
• Monitored Pollutants
  • Ozone
  • Fine Particulate Matter
  • Nitrogen Dioxide
  • Sulphur Dioxide
  • Carbon Monoxide
  • Total Reduced Sulphur Compounds

Data Sets

• Smog Advisory Statistics: Ontario Smog Events from 1995 to 2013
• RSS Feeds: Current Air Quality Readings and Forecasts
• Current AQI Readings: Saturday, May 25, 2013, 5:00 pm
• Historical AQI Readings: Search from 2007 to 2013
• Current Pollutant Data: Saturday, May 25, 2013, 5:00 pm
• Historical Air Quality Pollutant Data: Search from 2000 to 2013
• Data Disclaimer

Support and Other Resources

• Air Quality Publications
• Web Links
• Municipal Partners
• Contact Information
• Français