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

San Bernardino and Riverside County Valleys-The Inland Empire

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, temperatures up to 106. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 110 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire 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

Heat Advisory issued August 24 at 5:20PM CDT until August 24 at 8:00PM CDT by NWS Shreveport LA

Franklin; Wood; Smith; Gregg; Cherokee; Rusk; Panola; Nacogdoches; Shelby; Angelina; San Augustine; Sabine

Heat Advisory issued August 24 at 5:14PM CDT until August 24 at 8:00PM CDT by NWS Shreveport LA

Sevier; Little River; Miller; Lafayette; Caddo; Bossier; Webster; De Soto; Red River; Bienville; Jackson; Sabine; Natchitoches; Winn; Grant; Caldwell; La Salle; McCurtain; Red River; Bowie; Franklin; Titus; Camp; Morris; Cass; Wood; Upshur; Marion; Smith; Gregg; Harrison; Cherokee; Rusk; Panola; Nacogdoches; Shelby; Angelina; San Augustine; Sabine

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

San Diego County Inland Valleys

Heat Advisory issued August 24 at 2:08PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

San Bernardino County Mountains

Heat Advisory issued August 24 at 2:08PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

Riverside County Mountains

Source: National Weather Service.