Heat Advisory California | Effective 03/20/2026 11:21

Headline: 
Heat Advisory issued March 20 at 11:21AM PDT until March 20 at 8:00PM PDT by NWS San Diego CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
March 20, 2026 - 11:21am
Expires: 
March 20, 2026 - 8:00pm
Description: 
* WHAT...High temperatures 82 to 95 degrees below 6500 ft. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Area Description: 
San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
Forcast Office: 
NWS San Diego CA