Another hot day is on tap, and record temperatures were recorded in parts of Orange County, but it will be cooler Monday with onshore flow continuing to strengthen.
Heat warnings are in effect in the Antelope Valley through Thursday with temperatures expected to pass triple digits. A heat advisory for the West San Gabriel Mountains for Monday, with temperatures forecast close to 100, was issued by the National Weather Service.
Heat advisories were also extended for the Santa Clarita Valley and western San Fernando Valley, with temperatures expected between 92 and 101 Monday.
In Anaheim and Santa Ana, the highest minimum temperatures were recorded on Sunday. In Anaheim, it was 69, breaking the record of 68 set in 2022. In Santa Ana, it was 67, tying a record set in 2016.
The Southland baked under some triple-digit temperatures for the second straight day Sunday, but some relief was on the horizon this week, forecasters said.
On Sunday afternoon, the NWS said a strong thunderstorm would impact central Ventura and northern Los Angeles counties, with 50 mph gusts and possible pea-sized hail in the Gorman area until 3:30 p.m., where firefighters are battling the 15,690-acre Post Fire.
The agency also issued a flood warning for northwestern Los Angeles County until 9:30 p.m. Sunday, after Doppler radar indicated showers and thunderstorms producing heavy rain between 1 and 1.75 inches per hour.
Lancaster reached 104 degrees Sunday, and triple-digit highs were expected to remain there through at least Wednesday, according to the NWS. Santa Clarita hit 100 on Sunday, but was expected to drop to 93 by Wednesday.
Downtown Los Angeles saw a high of 89 degrees Sunday, which was expected to drop to 85 Monday and 83 by Wednesday. A similar pattern of gradually lower but still warm temperatures was expected throughout the region.
The Los Angeles County Department of Public Health issued a heat advisory for the valley areas Sunday.
“On hot days, it’s important for everyone to both take care of themselves and check on others, especially those who have a higher chance of getting ill due to the heat. Some of them include children, the elderly, those with health conditions, pregnant people, those living alone, and pets,” Dr. Muntu Davis, Los Angeles County Health Officer, said in a statement. “Hot days can be dangerous for anyone, so it’s crucial to stay cool and hydrated.
“Never leave children, the elderly, or pets alone in hot homes, places, or vehicles,” Davis added.
The city and county of Los Angeles both operate cooling centers for people who need a place to escape the heat. To find a location, visit ready.lacounty.gov/heat/ or call 211.
Meanwhile, the South Coast Air Quality Management District issued a smog advisory through 7 p.m. Tuesday, covering most non-coastal areas of Los Angeles County and stretching into much of Riverside County. AQMD officials said the extreme heat will likely lead to unhealthy or worse air quality conditions in much of the area.
The AQMD urged residents to check air quality levels and limit outdoor activities, limit the use of gasoline-powered lawn and garden equipment until evening hours and conserve electricity.