heat warning in effect Dangerous heat and humidity will continue through early to mid week. The first significant heat event of the season with dangerously hot and humid conditions is expected to continue into the week. What: Daytime highs of 30 to 33 degrees Celsius. Humidex values of 40 to 43. Overnight lows of 20 to 23 degrees Celsius, providing little relief from the heat. When: Now until Tuesday. Additional information: The extreme heat and humidity may continue into Wednesday. A cold front is expected to push through the region Tuesday evening, but there is some uncertainty with how far south this front will get. Should it remain farther north, the heat event may continue Wednesday. ### 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.
