A heat event began this afternoon and is expected to end Friday night.What:Daytime highs of 31 to 33 degrees Celsius.Humidex values of 42 to 44.Overnight lows of 18 to 21 degrees Celsius, providing little relief from the heat.When: Now to Friday night.Additional information:###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.htmlPlease 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.