A heatwave lingered, bringing dangerous conditions to some areas of San Diego County. Here's where to go to beat the inland heat.

In Rancho Bernardo, Bill Howe crews were spotted installing a heat pump system to replace a 16-year-old unit. The HVAC company reports this is currently their most requested service nationwide.

Much of San Diego County will be under a heat advisory later this week, while extreme heat is forecast for the desert areas, marking the first major heat wave of the summer.

San Diego County officials are urging residents to stay cool as a Heat Advisory and Extreme Heat Warning impact parts of the region.

Big changes [are] coming ... as high pressure over Arizona expands west into Southern California,' the weather service warns.

San Diego braces for a notable heatwave in the coming week with a brief cooldown before temperatures rise again.

Starting at 10 a.m., a Heat Advisory will take effect for San Diego County’s inland areas and mountains, while an Extreme Heat Warning will be in effect at 10 a.m. for the county’s desert communities -- where temperatures could soar up to 118 degrees.

The National Weather Service has issued heat advisories for large parts of Southern California amid a heat wave expected to start July 9.

On Monday at 12:16 p.m. the NWS San Diego CA issued a heat advisory valid from Wednesday 10 a.m. until Thursday 8 p.m. for Riverside County Mountains and San Diego County Mountains.

Triple-digit highs forecast as San Diego County braces for heat wave next week by Elizabeth Ireland • Times of San Diego July 5, 2025, 5:21 p.m. July 5, 2025, 5:21 p.m. Share this:

It's very important that people are aware of the risks of being outside, especially during these summer months,” said Dr. Charles Miller.