UPDATE: The current heat advisory for Northern California will expire at 8 p.m.

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The advisory was for Marin Coastal Range, Sonoma Coastal Range, North Bay Interior Mountains, Coastal North Bay Including Point Reyes National Seashore, North Bay Interior Valleys, San Francisco Bay Shoreline, San Francisco Peninsula Coast, East Bay Interior Valleys, Santa Cruz Mountains, Santa Clara Valley Including San Jose, Eastern Santa Clara Hills, East Bay Hills, Southern Salinas Valley/Arroyo Seco and Lake San Antonio, Santa Lucia Mountains and Los Padres National Forest, Northern Salinas Valley/Hollister Valley and Carmel Valley, Northern Monterey Bay and Big Sur as well as San Francisco and Monterey counties.

"Temperatures are forecast to cool by 10-15 degrees on Saturday with only Minor HeatRisk expected. Temperatures will still be above normal but to a lesser degree than what was observed earlier this week. Minor HeatRisk predominantly affects those who are extremely sensitive to heat. If you are going to be outside for prolonged periods of time make sure to drink plenty of water and take breaks in the shade," states the NWS San Francisco CA.

The advisory is in effect until 8 p.m.

Tips from the NWS for staying safe during a heat wave

• Stay hydrated: Keep yourself well-hydrated by drinking plenty of fluids.
• Find cool shelter: Stay in an air-conditioned room.
• Look out for others: Stay out of the sun, and check up on relatives and neighbors.
• Protect your little ones and furry friends: Never leave young children and pets alone in vehicles, especially during hot weather when car interiors can become dangerously hot in a matter of minutes.
• Exercise caution outdoors: If you work or spend time outside, take additional safety measures.
• Time your activities wisely: If possible, reschedule strenuous activities to early morning or evening when the heat is less intense.
• Be alert to warning signs: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke.
• Stay cool with clothing: Select lightweight and loose-fitting outfits for enhanced comfort.

For a safer outdoor work environment, follow the Occupational Safety and Health Administration (OSHA)'s guidance by scheduling regular rest breaks in shaded or air-conditioned places. If anyone shows signs of heat illness, promptly move them to a cool, shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published March 17, 2026 at 2:29 PM.