Outdoor Air Quality and Smog

Smog causes of thousands of premature deaths across Ontario every year. When we hear the word smog, many of us picture the brownish-yellow haze over cities but smog isn’t always visible. Smog often begins in big cities but is carried by winds and air currents; levels can be just as high or higher in rural areas.

Smog occurs when sunlight reacts with various pollutants emitted from industry, cars, pesticides and oil-based products. This is a year round problem but most smog warnings occur from May to September, especially on hot summer days. Smog alerts are issued by the Ministry of Environment when air pollutants reach levels affecting human health. For current readings call  1-800-387-7768 or visit the ministry website at www.airqualityontario.com. There is a link on the website to subscribe to the smog alert network to receive an automatic e-mail whenever a smog alert is issued.

Smog causes individuals to experience eye, nose and throat irritation, coughing, wheezing and shortness of breath. It is especially harmful to those with asthma and can worsen heart and lung conditions.

A smog alert doesn’t mean you can’t leave your house. However, you must be well prepared. Reduce the duration and intensity of activity and include more rest breaks. If you are more susceptible to smog you may want to think about delaying your exercise plans. Refuel your vehicle during non-sunlight hours and avoid the use of oil-based paints, pesticides and herbicides. You should reduce energy consumption on smog alert days by walking, car pooling and using public transit. It is also best to decrease the use of gas or diesel powered machines in an attempt to reduce pollutants that cause smog.

Air has no geographic boundaries. The actions you take locally to reduce smog creating pollutants will help address poor air quality at both the local and regional level. By taking action, we are claiming our right to breathe clean air. 

For further information, call Public Health at 519-376-9420 or 1-800-263-3456, or visit our website at www.publichealthgreybruce.on.ca

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