Yellow Warning - Heat

A multi-day heat event begins Wednesday.

What: Maximum temperatures of 30 to 33 degrees Celsius. Minimum temperatures of 20 to 23 degrees Celsius. Humidex values of 36 to 40.

When: Begins Wednesday through Friday.

Additional Information: The hottest days are expected to be Wednesday and Thursday, with maximum temperatures up to 33 degrees Celsius expected. Minimum temperatures of 20 to 23 degrees Celsius will provide little relief from the heat.

Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high-risk category.

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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.