A prolonged period of extreme heat and humidity continues. What: Daytime highs of 29 to 32 degrees Celsius and a humidex of 35 to 40. Overnight lows of 19 to 23 degrees Celsius, providing little relief from the heat. When: Continuing through Thursday. Additional information: Southern Ontario will experience hot and humid conditions now through much of this week. The heat is expected to ease somewhat Monday with hotter and more humid conditions returning on Tuesday. A shift in the weather pattern late next week will likely end this multi-day period of heat and humidity Thursday night. ### 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.
