The first heat event of the season will begin this afternoon and is expected to continue into Tuesday.

What:
Daytime highs near 30 degrees Celsius.
Humidex values near 36.
Overnight lows of 18 to 20 degrees Celsius.

When:
Beginning this afternoon and continuing into Tuesday. Ending Tuesday night.

Additional Information:
Temperatures may be cooler along the lake shores.

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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.