Fresno, Calif. – Dangerous heat is taking hold across California and the Desert Southwest as a major heat wave builds Wednesday and lingers through the weekend. The San Joaquin Valley is expected to be among the hardest-hit regions, with temperatures climbing well above 100 degrees and posing serious health risks.
According to the National Weather Service, Extreme Heat Watches and Warnings are in effect across much of California, Nevada, and Arizona. Officials warn that anyone without access to cooling or proper hydration faces an elevated risk of heat illness. Vulnerable groups such as the elderly, children, and outdoor workers are at greatest risk, but even healthy adults could be affected without cooling breaks.
Cooling centers are open in several counties, including Fresno, Kern, and Tulare, as officials urge residents to avoid strenuous outdoor activity during the afternoon and evening. Power demand may strain local utilities, and rolling outages remain possible if electricity use spikes. Drivers are also advised to check vehicles carefully, as breakdowns are more common in extreme heat.
Temperatures are expected to ease late Sunday into Monday in the Southwest, though the Northwest may not see relief until midweek. Additional advisories are possible as another round of extreme heat threatens parts of Oregon and Washington next week.
