Weather Alert: Extreme Heat Warning issued August 28 at 11:46AM PDT until August 29 at 8:00PM PDT by NWS San Diego CA
Alert
- Severity: Severe
- Urgency: Expected
- Area: San Bernardino and Riverside County Valleys-The Inland Empire
- Effective: 2026-08-28T11:46:00-07:00
- Ends: 2026-08-29T20:00:00-07:00
* WHAT…Dangerously hot conditions today with temperatures of 103 to 107 degrees. Hot conditions continue into Saturday with high temperatures up to 103 degrees. Lows will be in the mid 70s to low 80s. * WHERE…San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN…Until 8 PM PDT Saturday. * IMPACTS…Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS…Temperatures will fall to below normal by Sunday.
Official alert data (National Weather Service)
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Inspection record1 source
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