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Updated:March 12, 2026 2:30 pm PDT

Heat Advisory HEAT ADVISORY  
San Diego County

Effective: Thu, 3/12 5:39am Severity:  Moderate 
Updated: March 12, 2026 2:30 pm Urgency: Expected
Expires: Thu, 3/12 4:00pm Certainty: Likely

Areas Affected: San Diego County Coastal Areas - San Bernardino and Riverside County Valleys-The Inland Empire - San Diego County Inland Valleys - Orange County Coastal - Orange County Inland
 
Alert Details:
* WHAT...High temperatures from the lower to mid 80s near the coast
and lower to mid 90s for the valleys and inland Orange County
expected.

* WHERE...Orange County Coastal Areas, Orange County Inland Areas,
San Bernardino and Riverside County Valleys-The Inland Empire, San
Diego County Coastal Areas, and San Diego County Valleys.

* WHEN...From 10 AM this morning to 8 PM PDT Friday.

* IMPACTS...Hot temperatures may cause heat illnesses.

Information:
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.