SAN DIEGO, Calif. – Triple-digit heat will linger across Southern California’s inland valleys and mountain communities through Friday evening, raising the risk of heat-related illnesses for residents without access to cooling.
According to the National Weather Service in San Diego, heat advisories remain in effect for San Diego County valleys, the Riverside and San Bernardino mountains, the San Diego mountains, as well as Orange County’s inland cities and foothills. Temperatures in Escondido, Poway, and El Cajon could climb near 100, while Santa Ana, Irvine, and Fullerton may see highs in the mid-90s.
Big Bear Lake, Julian, and Idyllwild are also under advisory, with mountain communities forecast to approach 100 degrees at times. Officials caution that prolonged outdoor activity could quickly lead to dehydration or heat stroke. The Occupational Safety and Health Administration urges frequent shaded breaks for outdoor workers and hydration checks for vulnerable neighbors and relatives.
Residents are encouraged to limit strenuous activity to early morning or evening, stay in air-conditioned spaces, and avoid leaving children or pets inside parked vehicles.
The current advisories are scheduled to expire by 8 p.m. Friday, though weather officials say additional alerts could be issued if the heat persists into the weekend.
