Yellow Warning - Heat

The first heat event of the season begins today.

What: Maximum temperatures of 28 to 32 degrees Celsius. Minimum temperatures of 17 to 21 degrees Celsius. Humidex values of 35 to 40.

When: Today through Thursday, and possibly into Friday.

Additional Information: Maximum temperatures of 28 to 30 degrees Celsius and humidex values of 34 to 36 are expected today. Heat and humidity will increase further beginning Tuesday with maximum temperatures of 29 to 32 degrees Celsius and humidex values of 36 to 40. Minimum temperatures of 18 to 22 degrees Celsius will provide little relief from the heat.

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Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.

For more information: https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/how-protect-yourself.html https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/who-is-at-risk.html

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.