Description - Figure 2 - Relationship between daily maximum temperatures in June, July and August, and all non-traumatic deaths for selected Canadian cities, 1986-2005

A graph illustrates the relationships between daily maximum temperatures in June, July and August, and all non-traumatic deaths for selected Canadian cities, 1986-2005. Trend lines demonstrate that temperature is a health risk in all five cities examined and that the temperature-mortality relationship varies among them. Relative mortality above 100% was detected at 27°C/81°F in Winnipeg, 30°C/86°F in Windsor, 26°C/79°F in Hamilton, and 29°C/84°F in Toronto and Fredericton. A sharp increase in the percentage of relative mortality occurs for all cities examined at a daily maximum temperature of approximately 26°C/79°F. No sharp increase in mortality exists for daily maximum temperatures below 26°C/79°F, with the exception of one city; percentage relative mortality in Hamilton increases sharply at temperatures below 16°C/61°F.