National Weather Service United States Department of Commerce
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Last Map Update: Wed, Mar 18, 2026 at 12:20:28 am PDT

HIGH RISK FOR HEAT ILLNESS Extremely Rare Heat for March Suggestion Actions: ADJUST PLANS to limit strenuous outdoor activities to just the early morning hours. Seek air conditioned spaces. Drink plenty of fluids. Check in on elderly neighbors and loved ones. Always CHECK THE BACK SEAT for children & animals. Key Details: Temperatures are 25-35 degrees above normal Many daily records will be shattered. Warm overnight conditions will add to the heat risk, especially foothills and lower mountains.
It was a record kind of day today. This is just the start of a LONG DURATION HEAT WAVE, with no relief expected the rest of the week - especially inland of the beaches. Take heat risks seriously. Make a plan now on how you will stay cool the rest of the week.

 

 

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