Ontario Heat Warning

• ‘Multi-day’ heat wave alert issued for much of Ontario

  Environment Canada has issued a “multi-day” heat wave alert expected to continue until Thursday for most of Ontario, including the Greater Toronto Area.

  Weather

  Jul 4, 2023
  
• Majority of Ontario bracing for major heat event

  The warning said the temperatures would begin on Tuesday afternoon and could last for two to three days.

  Weather

  Jul 3, 2023
  
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• Heat warning extended for large swaths of eastern and western Canada

  Five provinces across central and eastern Canada continued to swelter in unseasonably hot conditions on Sunday, Environment Canada said as it extended a widespread heat warning.

  Weather

  Aug 7, 2022
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• Hot weather prompts advisories from some Ontario public health units

  Some public health units in southwestern Ontario have issued heat advisories with hot and humid weather set to descend on the region Wednesday.

  Weather

  Aug 3, 2022
• Humid conditions in southern Ontario expected to last into Friday or Saturday

  Much of the province has been experiencing scorching weather this week, with daytime temperatures in the low 30s, or upper 30s with humidity.

  Weather

  Jul 21, 2022
• Heat warnings for large stretch of Ontario as temperatures near mid 30s

  Environment Canada has issued warnings for a stretch of the province from Prescott and Russell to Windsor, with temperatures expected to reach or surpass 30 C.

  Weather

  Jul 19, 2022
• Heat warning remains in effect for southern Ontario

  The warning applies to Hamilton, Toronto, Niagara, London, Halton-Peel and other regions in southern Ontario, as well as Greater Sudbury, Kirkland Lake and North Bay.

  Weather

  Jun 22, 2022
• Heat warnings in effect across much of southern Ontario, humidex could be as high as 42 C

  Environment Canada says the high temperatures could also lead to degrading air quality, which could affect people's health. The heat is expected to remain until Thursday.

  Weather

  Aug 25, 2021
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• Toronto cooling centres staying open as heat warning for southern Ontario continues

  "It is shaping up to be one of the hottest Julys in recent memory for southern and central Ontario."

  Weather

  Jul 6, 2020
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• Heat warning issued for much of southern Ontario with humidex expected in high 30s

  Officials said temperatures will be in the low 30s with humidex values reaching the mid-to-high 30s for part of the week.

  Weather

  Jun 8, 2020