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For immediate release
August 17, 2009

Smog Advisory Partially Lifted

NEWS

Effective immediately, the Ministry of the Environment has lifted its Smog Advisory for the following forecast regions:

  • Bancroft-Bon Echo
  • Barrie-Orillia-Midland
  • City of Ottawa
  • Dufferin-Innisfil
  • Dunnville-Caledonia-Haldimand
  • Elgin
  • Grey-Bruce
  • Haliburton
  • Huron-Perth
  • London-Middlesex
  • Oxford-Brant
  • Parry Sound-Muskoka-Huntsville
  • Prescott and Russell
  • Renfrew-Pembroke-Barry’s Bay
  • Sarnia-Lambton
  • Simcoe-Delhi-Norfolk
  • Smiths Falls-Lanark-Sharbot Lake
  • Waterloo-Wellington
  • Windsor-Essex-Chatham-Kent

Increasing cloudiness across parts of southwestern and central Ontario is resulting in cleaner air in the forecast regions listed above.

A Smog Advisory remains in effect for:

  • Belleville-Quinte-Northumberland
  • Brockville-Leeds and Grenville
  • City of Hamilton
  • City of Toronto
  • Cornwall-Morrisburg
  • Halton-Peel
  • Kingston-Prince Edward
  • Niagara
  • Peterborough-Kawartha Lakes
  • Stirling-Tweed-South Frontenac
  • York-Durham

Hot and sunny conditions combined with a southwesterly flow of polluted air from the U.S. and local build-up of pollutants are resulting in elevated smog levels across some parts of southern and eastern Ontario.

This advisory will remain in effect until further notice.

QUICK FACTS

  • A Smog Advisory is related to the Air Quality Index (AQI), which rates how clean the air is. The AQI scale ranges from 0 to 100+. Higher numbers mean higher health risks.
  • A Smog Advisory is issued in your region when the AQI is expected to reach 50 in the next 24 hours. It can be lifted once the AQI is expected to reach or drops below 50.
  • Smog is made up of a complex mixture of air pollutants that are sometimes visible, such as a brownish-yellow haze over cities; sometimes not. The two main ingredients of smog are ground-level ozone (O3) and fine particulate matter (PM2.5).
  • Smog is harmful to the lungs and heart. Even in healthy people, smog can reduce lung function.

LEARN MORE

Check out the Air Quality Index or AQI in your area.

To help combat smog, here’s what you can do to spare the air.

Learn more about air quality.

 

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Contacts:
Contact information for the general public:

Kate Jordan, Communications Branch, 416-314-6666

416-325-4000 or 1-800-565-4923/
www.ontario.ca/environment

 

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