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.

Smoke is causing or expected to cause poor air quality and reduced visibility.Smoke from wildfires in Quebec will affect portions of the region through the day. Smoke is expected to shift away from the area tonight.###As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling outdoor sports, activities and events.You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance.People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should reduce or reschedule strenuous activities outdoors and seek medical attention if experiencing symptoms.For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666.Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values.Please continue to monitor alerts and forecasts issued by Environment Canada.