A heat event begins today.What:Maximum temperatures of 30 to 36 degrees Celsius.Minimum temperatures of 18 to 22 degrees Celsius.Humidex values of 38 to 42. When:Beginning today and ending late Tuesday.Additional information:Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high-risk category.###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.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.