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Weather / Heat Advisory

Moderate

Heat Advisory issued August 24 at 2:08PM PDT until August 25 at 10:00AM PDT by NWS San Diego CA

Santa Ana Mountains and Foothills

Urgency: Expected
Certainty: Likely
Onset: 8/24/2026, 9:08:00 PM
Expires: 8/25/2026, 5:45:00 AM

Details

* WHAT...For the Heat Advisory, high temperatures in the 90s expected. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 105 expected. * WHERE...Santa Ana Mountains and Foothills County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Increasing temperatures into the middle of next week will increase the threat of heat-related illness across populations.

What To Do

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Other Active Heat Advisory Alerts

Source: National Weather Service.

Heat Advisory — Santa Ana Mountains and Foothills | Now in USA