Active Weather Alerts
Yellow Warning - Heat
Issued: 2:39 PM Jul. 12, 2026 – Environment and Climate Change Canada
A heat event begins today. 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 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. ### 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.
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