Toronto Public Health and its community partners work together to reduce the risks of heat-related illness due to extreme heat. Here are some additional resources about the health effects of heat and how to keep yourself, clients and loved ones safe.

Data available on the number of Heat Warnings and Extended Heat Warnings from 2001 to 2018.

Note: In 2019, to avoid duplication with the Heat Warnings issued by Environment and Climate Change Canada, Toronto Public Health will no longer issue these warnings to the public as they are already communicated broadly. Learn more about Toronto’s Hot Weather Response.

2019 Heat Warnings

  • July 5
  • July 6
  • July 18
  • July 19
  • July 20
  • July 21
  • July 26
  • July 27
  • July 28
  • July 29
  • July 30