Map Shows Where California Faces One of Hottest Days of the Year

As fall begins on the calendar, California is bracing for one of its hottest days of the year, with heat advisories in place across the Bay Area and interior valleys.

Temperatures on Tuesday are expected to soar into the triple digits in some regions, including parts of the East Bay and Santa Clara Valley, according to forecasters.

Why It Matters

California’s late-season heat surge poses serious public health concerns, especially for people without access to cooling or adequate hydration. According to the National Weather Service, the expected heat “can cause heat illnesses,” and the impacts are likely to affect health systems, infrastructure, and those in heat-sensitive industries.

The heat wave also elevates fire risk. With offshore winds forecast to persist from Monday through Tuesday, dry conditions and hot air can exacerbate the potential for wildfires, a familiar threat in the state’s dry season.

What To Know

The National Weather Service issued a Heat Advisory from 11 a.m. to 7 p.m. Tuesday for San Francisco, the East Bay, and the Santa Clara Valley, warning of “temperatures up to 100 degrees for parts of the East Bay” and “mid to upper 80s over eastern portions of San Francisco.”…

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