The National Weather Service issued a long duration heat advisory for the Bay Area, including coastal and inland counties from south of Monterey County to Sonoma County.
Temperatures are forecast to be in the mid 80s along the coast and up to the mid 90s in interior areas.
The advisory is in effect from 10 a.m. Monday to 8 p.m. Friday.
The National Weather Service advised limiting outdoor activity and monitoring for heat-related illness. Take frequent breaks and stay hydrated. If caught outside, seek shade.
There is a moderate risk of heatstroke from Sunday through Wednesday and a minor risk all week, through Saturday, according to the Weather Service.
Do not leave pets or children in vehicles and check on neighbors, friends and vulnerable adults.Â
Worker protections during heat wave
Cal/OSHA is urging employers across California to take steps to prevent heat illness as one of the year’s first heat waves pushes temperatures above seasonal averages this week.
The agency said workers may not yet be acclimated to the heat and may need additional breaks and other protections, especially newer employees.
Under state heat illness prevention rules, employers must provide workers with water, shade and rest breaks and maintain written prevention plans and training for supervisors.
For indoor workplaces such as restaurants, warehouses and manufacturing facilities, Cal/OSHA said protections are required when temperatures reach 82 degrees, including access to water, cool-down areas and rest breaks.
For outdoor workers, employers must provide fresh water, shade when temperatures reach 80 degrees or higher, and cool-down breaks upon request. Additional high-heat protections are required at 95 degrees or higher in industries such as agriculture, construction, landscaping, oil and gas extraction, and some transportation sectors, the agency said.
Cal/OSHA said heat illness can be serious and potentially deadly and urged employers to remain vigilant during the warm spell.