Much of Southern California is under a Heat Advisory on Saturday as rain and possible thunderstorms make their way into the region.
The National Weather Service’s Heat Advisory, which expires at 10 a.m. Tuesday, indicates temperatures in the Southland could reach nearly 100 degrees.
A graphic issued by NWS on Thursday forecasted temperatures “ranging from 85 to 90” in SoCal valley regions. Further inland, it could reach between 90 and 105 degrees.
Coastal communities will be spared from most of the heat, with forecasted highs in the mid-70s and low-80s.
The forecasted high temperatures for Southern California on July 11, 2026. (KTLA)
Other weather warnings in SoCal Saturday morning is an Air Quality Alert that concerns high elevation areas in the San Gabriel and San Bernardino mountains, including Big Bear Lake and Lake Arrowhead, as well as some High Desert communities.
The alert is in place due to due to increased fine particle pollution from smoke coming from the Summit Fire.
“Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions,” the NWS advises. The Air Quality Alert expires at 5 p.m. Saturday.
A Beach Hazards Statement will also go into effect starting Sunday and lasting until at least Wednesday.
“A south to southwest swell will affect the coastal waters through the week. With the longer period swell, the potential for larger surf and a greater risk for rip currents will be likely,” the NWS said in the Beach Hazards Statement alert. “High tides are expected to continue through this weekend with Monday being the peak of 7.0 to 7.6 ft above Mean Lower Low Water.”
Much of Southern California is under a Heat Advisory on Saturday. It will last until Tuesday morning. (NWS)
Saturday’s Heat Advisory comes ahead of a round of rain that is poised to hit the area.
According to the National Weather Service, not only will warm temperatures continue for inland areas into the week, some “monsoonal showers and thunderstorms” are also possible starting late Saturday night and “continuing well into next week.”
“Temperatures will rise again on Tuesday, potentially reaching Major Heat Risk levels across parts of the area, with the monsoonal moisture adding to the discomfort from the heat,” the NWS Area Forecast Discussion indicated in an update early Saturday morning.
The impending heat has led to an Extreme Heat Watch starting Tuesday at 10 a.m. for most of Southern California and lasting until at least Thursday. Temperatures of up to 105 degrees are possible throughout the region, according to the NWS.
KTLA’s Kirk Hawkins, in his Saturday morning forecast, told SoCal residents to be ready for “a significant jump” in temperatures.
“Triple-digit temperatures are very much on the way,” Hawkins said.
High temperatures for the San Fernando Valley starting Saturday, July 11, 2026. (KTLA)
High temperatures for the San Gabriel Valley starting Saturday, July 11, 2026. (KTLA)
High temperatures for coastal SoCal starting Saturday, July 11, 2026. (KTLA)
High temperatures for SoCal mountain communities starting Saturday, July 11, 2026. (KTLA)
High temperatures for inland Ventura County starting Saturday, July 11, 2026. (KTLA)
High temperatures for the High Desert starting Saturday, July 11, 2026. (KTLA)
The L.A. County Department of Public Health recommends the following tips to keep yourself and others safe during excessive heat:
Drink plenty of water and keep hydrated throughout the day
If going out, plan your day to avoid going out during the hottest hours, and wear sunscreen (SPF 15)
Wear lightweight, light-colored clothes, and wear a hat or use an umbrella
Never leave children or pets alone in cars. Call 911 if you see a child or pet in a car alone
Check on those at risk for heat-related illness, like those who are sick or have chronic conditions, older adults, pregnant women, children, those who live alone, pets, and outdoor workers and athletes
If you don’t have air conditioning, the health department says to follow these tips:
Stay hydrated and don’t wait until you’re thirsty to drink water
Take cool showers or baths
Use your stove and oven less to avoid making your home hotter
Visit a library, cooling center, shopping mall, or other air-conditioned space. If you need help finding a cool space, call 211.
Click here to view the most updated forecast for your Southern California community.
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