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  Storm Center: Weather Alerts: Warnings


 
My Location: San Francisco, CA 
 
Current Time: 03:59:18 PM PDT

Other Alerts  
Weather Alert
    Other Weather Alerts
Type Heat Warning

Special Weather Statement

Issued By
Issuing Time Sun, 10 Aug 2025 12:55:06 PDT
Broadcast Time Sun, 10 Aug 2025 12:55:06 PDT
Valid Until Mon, 11 Aug 2025 04:55:06 PDT
Brief Description Heat Warning
Detailed Description Hot and humid conditions continue. What: Daytime highs of 31 to 33 degrees Celsius, with humidex values of 37 to 40. Overnight lows near 20 degrees Celsius. When: Continuing through Monday. Additional information: A cooler air mass is expected to arrive Monday night, bringing an end to this heat event. Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category. ### Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion. 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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