07/28/2026
DIR ADVISORY
Release Number: 2026-61
Date: July 28, 2026
Cal/OSHA urges employers to protect workers as high heat as high heat continues through August 2
Hot temperatures will continue across Southern California early this week before intensifying and spreading northward. Cal/OSHA is reminding employers to take required steps to prevent heat illness, including providing workers with adequate water, shade or cool-down areas, rest breaks and training.
The hottest conditions early in the week are expected in the Mojave Desert, Indian Wells Valley and Antelope Valley, where temperatures are forecast to range from 110 to 118 degrees Fahrenheit.
Later this week, the heat is expected to intensify and spread northward, increasing heat risks in the Central Valley, along the coast and in the Bay Area. Portions of Southern California will also continue to experience extreme heat through the weekend. Temperatures could exceed 120 degrees in the Southern California deserts and reach triple digits across parts of Central and Northern California.