A heat event begins Sunday.What:Maximum temperatures of 29 to 31 degrees Celsius.Minimum temperatures of 18 to 20 degrees Celsius.Humidex values of 36 to 38.When:Beginning Sunday 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.###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.