Southern California Heat Advisory. Southern California Heat Advisory: LA, Inland Empire, and More Brace for Unseasonal 90-Degree Temperatures This Week
Southern California residents are in for another burst of summer-like weather as heat advisories take effect across Los Angeles, the Inland Empire, and surrounding areas this week. The National Weather Service (NWS) has warned of a significant warming trend that will last through the end of the week, pushing daytime temperatures into the 90s — unusually high for late October.
Heat Advisory Issued for Los Angeles and Inland Counties
Both the NWS Los Angeles and NWS San Diego offices issued heat advisories beginning Tuesday, October 28, extending through Wednesday evening.
According to the NWS, the warmest days will be Tuesday and Wednesday, with temperatures expected to soar up to 93–95 degrees Fahrenheit in some areas.
The Los Angeles office—which covers San Luis Obispo, Santa Barbara, Ventura, and Los Angeles counties—announced a heat advisory from 10 a.m. Tuesday to 7 p.m. Wednesday. Affected regions include:
Ventura County beaches
Pacific Palisades and Malibu area
Long Beach
Los Angeles and parts of the San Fernando Valley
Inland communities are also expected to feel the heat. The NWS San Diego has issued a heat advisory for inland Orange County, the Inland Empire, and parts of San Diego County, effective 11 a.m. to 7 p.m. Tuesday. Temperatures in these regions could reach as high as 95 degrees.
How Hot Will It Get?
As of the latest NOAA forecast, here’s how high temperatures are expected to climb across key Southern California cities on Tuesday:
Palm Springs: 94°F
Thermal: 94°F
Temecula: 94°F
Anaheim: 92°F
Riverside: 92°F
Burbank: 91°F
Escondido: 90°F
Los Angeles: 89°F
Ventura: 87°F
And the heat won’t stop there. The NWS San Diego forecasts that Palm Springs and Thermal could hit 95°F by Wednesday, while Borrego Springs and El Centro may reach 93°F.
Further west, San Bernardino, Ontario, Riverside, and Hemet are likely to see highs around 91°F, while Ventura and Los Angeles are expected to stay slightly cooler, with forecast highs of 89°F and 83°F, respectively.
Why This Heat Wave Matters
While late-October heat isn’t unheard of in Southern California, the combination of clear skies, dry conditions, and weak offshore winds is driving temperatures much higher than normal for this time of year. This pattern could also increase fire danger, particularly in areas with low humidity and dry vegetation.
What a Heat Advisory Means
A heat advisory is issued by the National Weather Service when temperatures are expected to pose health risks, even if they don’t reach extreme “excessive heat warning” levels.
According to the NWS, these conditions can still cause heat-related illnesses, especially among sensitive groups such as children, the elderly, outdoor workers, and people with chronic medical conditions.
Southern California Heat Advisory 2025
Safety Tips During a Heat Advisory
If you live in or plan to travel through Southern California this week, here are a few safety reminders:
Stay Hydrated: Drink plenty of water and avoid alcohol or caffeine.
Avoid Outdoor Activities: Try to limit physical exertion during peak heat hours (10 a.m. – 5 p.m.).
Find Air Conditioning: Spend time in air-conditioned buildings such as malls, libraries, or community centers.
Check on Others: Keep an eye on elderly neighbors, young children, and pets, who are especially vulnerable to heat illness.
Never Leave Pets or People in Cars: Even a few minutes inside a parked vehicle can be deadly in high heat.
Looking Ahead
This warm spell is expected to ease slightly by the weekend, but temperatures will likely remain above average for late October.
Residents are encouraged to monitor local forecasts, follow NWS heat advisories, and take precautions to stay safe and comfortable as the region weathers this unseasonal heat.
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