Toronto Public Health, in collaboration with Environment Canada, has completed a major new study on the combined effects of air pollution and hot weather on health. The study was funded by Health Canada. The four cities selected for study are Toronto, Montreal, Ottawa and Windsor. Of particular interest are the combined effects of extreme heat and air pollution on premature deaths.
The study reaffirmed the significance of air pollution as a major risk factor leading to premature deaths, in large part because air pollution is a year-round phenomenon. Extreme heat is a serious issue on those days when it occurs. With global warming, the number of extreme heat days and resultant mortality will rise significantly unless actions are taken to protect at-risk populations.
Note: Some of the documents below are over 500KB in size. A high speed connection is recommended to download these files.
News Release - Study shows impacts of extreme weather and smog; Medical Officer of Health calls for action (June 2005) (PDF file size 52KB)
Backgrounder - Combined Impact of Extreme Weather and Air Pollution on Mortality (June 2005) (PDF file size 76KB)
Backgrounder - City of Toronto Hot Weather Response Plan (June 2005) (PDF file size 41KB)
Board of Health report - Combined Impact of Extreme Heat and Air Pollution on Mortality (May 2005) (PDF file size 38KB)
Summary report - Influence of Weather and Air Pollution on Mortality in Toronto (June 2005)