Active Weather Alerts
Heat Warning
Issued: 3:02 PM Jul. 16, 2025 – Environment and Climate Change Canada
A prolonged period of hot and humidity continues. What: Daytime highs of 31 to 34 degrees Celsius and a humidex of 37 to 42. Overnight lows of 19 to 21 degrees Celsius, providing little relief from the heat. When: Continuing through Thursday. Additional information: Showers and thunderstorms moving through Thursday morning are expected to keep daytime temperatures relatively cooler for most regions, bringing an end to the heat event. For regions not affected by showers, a cooler airmass will bring an end to the event by 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.
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