Heat Advisory in Los Angeles and Inland Empire: How Hot Will It Get This Week?

Southern California is heating up again as a heat advisory takes effect for Los Angeles, Ventura, Orange, Riverside, San Bernardino, and parts of San Diego counties this week. The National Weather Service (NWS) has issued warnings for Tuesday and Wednesday, with temperatures forecast to soar into the 90s across much of the region.

According to the NWS Los Angeles and San Diego offices, the advisory will be in place from Tuesday morning through Wednesday evening, October 29, 2025. Daytime highs could reach between 89 and 95 degrees, unusually hot for late October as the region nears November.

Heat Advisory Details and Affected Areas

The NWS Los Angeles/Oxnard office said that a “significant warming trend” will begin Monday and last through the end of the week, with peak temperatures expected on Tuesday and Wednesday. In Los Angeles and Ventura counties, the advisory runs from 10 a.m. Tuesday until 7 p.m. Wednesday, with highs up to 93 degrees.

Impacted areas include Malibu, Pacific Palisades, Long Beach, the San Fernando Valley, Agoura Hills, Calabasas, and parts of the Santa Monica Mountains. Ventura County beaches and inland valleys are also under the advisory.

Further inland, the NWS San Diego office reported that inland Orange County, the Inland Empire, and portions of San Diego County will see temperatures up to 95 degrees. Palm Springs, Thermal, and Temecula are among the hottest spots, all forecast to hit 94 to 95 degrees midweek. Inland cities like Riverside, Hemet, and Ontario are expected to see highs around 91 degrees.

Even coastal areas won’t be spared entirely. Burbank is expected to reach 91 degrees, while Los Angeles and Ventura will experience highs of 89 and 87 degrees, respectively. The NWS warns that these temperatures are well above average for late October and may increase the risk of heat-related illnesses.

Staying Safe During the Heat Wave

Health officials urge residents to take precautions to avoid heat exhaustion or heat stroke. The Environmental Health and Safety office at UC Irvine recommends staying hydrated, avoiding alcohol and caffeine, taking breaks in shaded areas, and wearing lightweight clothing.

People most at risk include young children, the elderly, outdoor workers, and those without air conditioning. The NWS emphasized that “there is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.”

Los Angeles, Orange, Riverside, and San Bernardino counties have opened cooling centers for residents needing relief. These facilities provide air-conditioned spaces where people can rest and rehydrate safely during peak heat hours.

What to Expect Later This Week

According to forecasts, the hot spell will continue into Wednesday before gradually cooling by the weekend. Palm Springs and Thermal are expected to hit 95 degrees midweek before dropping slightly by Friday. Meanwhile, temperatures in Los Angeles and Ventura are forecast to dip back into the 80s by the weekend.

Residents are advised to stay weather-aware, check on vulnerable neighbors, and monitor official NWS updates throughout the week as the heat advisory remains in effect.

FYI (keeping you in the loop)-

Q1: When does the heat advisory start and end?

The advisory begins Tuesday morning, October 28, and ends Wednesday evening, October 29, 2025, at 7 p.m.

Q2: Which cities in Southern California will be hottest?

Palm Springs, Thermal, and Temecula could reach up to 95 degrees, while Los Angeles and Burbank will be in the upper 80s to low 90s.

Q3: What are the main health risks during a heat advisory?

Heat exhaustion and heat stroke are the primary risks, especially for outdoor workers, children, and seniors.

Q4: How can residents stay safe during high temperatures?

Drink water frequently, take breaks in shade, avoid caffeine and alcohol, and check on vulnerable individuals.

Q5: Will the heat wave continue beyond Wednesday?

Temperatures will remain warm through midweek but are expected to gradually cool by the weekend.