California – Heat is building fast across Los Angeles this morning, and by Friday afternoon, sidewalks will radiate near-triple-digit warmth as an early spring surge pushes temperatures into the 96 to 104 degree range. The intensity arrives at a time when many are not acclimated, raising immediate concerns for heat illness, especially during peak afternoon hours.
According to the National Weather Service in Los Angeles/Oxnard, an Extreme Heat Warning remains in effect until 8 p.m. Friday, covering downtown Los Angeles, the San Fernando Valley, Santa Clarita Valley, and inland coastal areas. Officials warn that warm nighttime lows in the upper 60s will limit recovery, increasing stress on vulnerable populations.
Across the region, neighborhoods like Pasadena, Burbank, and Woodland Hills will feel the sharpest edge of the heat. Mountain foothills and valley communities could see the highest readings, while coastal spots stay slightly cooler but still unseasonably warm. Expect increased energy demand as air conditioning use spikes. Hydration and access to cooling spaces will be critical.
Drivers should plan for glare and heat fatigue during the afternoon commute, especially along I-5 and U.S. 101 corridors. Limit outdoor work to early morning hours. Check on older adults and pets, and never leave anyone in a parked vehicle.
This early-season heat wave peaks Friday, the first full day of spring, before easing slightly into the weekend. Additional advisories could follow if temperatures hold.
Five Day Outlook for Los Angeles, California:
Thursday: Sunny and hot, high near 98°F.
Friday: Sunny and hot, high near 97°F.
Saturday: Sunny, high near 94°F.
Sunday: Sunny, high near 88°F.
Monday: Mostly sunny, high near 83°F.
