weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Heat Advisory


URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
606 AM PDT Sat Aug 30 2025

CAZ038-344-345-353-310115-
/O.CON.KLOX.HT.Y.0007.250831T1700Z-250903T0100Z/
Cuyama Valley-San Luis Obispo County Interior Valleys-San Luis
Obispo County Mountains-Santa Barbara County Interior Mountains-
Including the cities of San Rafael Mountain, Big Pine Mountain,
Carrizo Plain, Creston, Shandon, La Panza Range, Caliente Range,
New Cuyama, Figueroa Mountain, and Santa Margarita Lake
606 AM PDT Sat Aug 30 2025

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SUNDAY TO 6 PM PDT
TUESDAY...

* WHAT...Hot daytime conditions with high temperatures of 95 to 105
  degrees common, and warm overnight conditions.

* WHERE...Interior valleys and interior mountains of San Luis Obispo
  and Santa Barbara Counties, including Cuyama.

* WHEN...From 10 AM Sunday to 6 PM PDT Tuesday.

* IMPACTS...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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Limit strenuous outdoor activities (like hiking) to the early
morning hours. Stay in air conditioned spaces during the heat of the
day. Check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
606 AM PDT Sat Aug 30 2025

CAZ341>343-347>349-351-310115-
/O.CON.KLOX.HT.Y.0007.250831T1700Z-250901T0100Z/
San Luis Obispo County Inland Central Coast-Santa Lucia Mountains-
Southern Salinas Valley-Santa Barbara County Inland Central Coast-
Santa Ynez Valley-Santa Barbara County Southwestern Coast-Santa
Ynez Mountains Western Range-
Including the cities of Lake Cachuma, Nipomo, Irish Hills, Hearst
Castle, Refugio State Beach, Jalama Beach, Templeton, Santa Ynez,
Buellton, Santa Maria, Solvang, Gaviota, San Marcos Pass, San
Miguel, Lopez Lake, San Luis Obispo, Los Olivos, Paso Robles, El
Capitan State Beach, Lake Nacimiento, and Atascadero
606 AM PDT Sat Aug 30 2025

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 6 PM PDT SUNDAY...

* WHAT...Hot daytime conditions with high temperatures from 85 to 95
  coastal plains to 95 to 105 degrees valleys and hills.

* WHERE...Inland Central Coasts of San Luis Obispo and Santa Barbara
  Counties, Santa Lucia Mountains, Santa Ynez Mountains Western
  Range, Santa Ynez Valley, and Southern Salinas Valley.

* WHEN...From 10 AM to 6 PM PDT Sunday.

* IMPACTS...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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Limit strenuous outdoor activities (like hiking) to the early
morning hours. Stay in air conditioned spaces during the heat of the
day. Check up on relatives and neighbors.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
606 AM PDT Sat Aug 30 2025

CAZ088-356>358-368>376-378-379-548-310115-
/O.CON.KLOX.HT.Y.0008.250901T1700Z-250903T0100Z/
Santa Clarita Valley-Lake Casitas-Ojai Valley-Central Ventura
County Valleys-Los Angeles County Inland Coast including Downtown
Los Angeles-Western Santa Monica Mountains Recreational Area-
Eastern Santa Monica Mountains Recreational Area-Calabasas and
Agoura Hills-Western San Fernando Valley-Eastern San Fernando
Valley-Southeastern Ventura County Valleys-Santa Susana Mountains-
Southern Ventura County Mountains-Interstate 5 Corridor-Western
San Gabriel Mountains and Highway 14 Corridor-Los Angeles County
San Gabriel Valley-
Including the cities of Newhall, East Los Angeles, Beverly Hills,
Norwalk, Sunland, Topanga, Santa Paula, Hollywood, Warm Springs,
Mill Creek, Fillmore, Topatopa Mountains, Simi Valley, Lake
Castaic, Glendale, Pasadena, Ojai, Northridge, Van Nuys, Downey,
Meiners Oaks, Tejon Pass, Pyramid Lake, Acton, Compton, Matilija,
Burbank, Newbury Park, Oak View, Santa Clarita, Culver City, San
Gabriel, La Canada Flintridge, Rose Valley, Pomona, Chatsworth,
Woodland Hills, Piru, Oat Mountain, Westlake Village, El Monte,
Thousand Oaks, Valencia, Malibu Lake, Gorman, Universal City,
Moorpark, and Malibu Bowl
606 AM PDT Sat Aug 30 2025

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM MONDAY TO 6 PM PDT
TUESDAY...

* WHAT...Hot daytime conditions with high temperatures of 96 to 106
  degrees common, and warm overnight conditions.

* WHERE...Coastal valleys and lower mountains of Los Angeles and
  Ventura Counties, as well as the Los Angeles County Inland Coastal
  Plain which includes Downtown Los Angeles.

* WHEN...From 10 AM Monday to 6 PM PDT Tuesday.

* IMPACTS...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.

* ADDITIONAL DETAILS...This advisory may need to be extended through
  Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Limit strenuous outdoor activities (like hiking) to the early
morning hours. Stay in air conditioned spaces during the heat of the
day. Check up on relatives and neighbors.

&&

$$

Visit us at http://www.weather.gov/LosAngeles

Kittell

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1219 PM PDT Sat Aug 30 2025

CAZ048-050-057-554-311230-
/O.NEW.KSGX.HT.Y.0006.250901T1700Z-250903T0100Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-Santa Ana Mountains and Foothills-Orange
County Inland Areas-
Including the cities of Rancho Cucamonga, Santa Ana, Corona,
Fontana, Fullerton, Santee, Ontario, San Bernardino, Poway, La
Mesa, Mission Viejo, Escondido, Irvine, Garden Grove, El Cajon,
San Marcos, Riverside, Moreno Valley, Orange, and Anaheim
1219 PM PDT Sat Aug 30 2025

...HEAT ADVISORY IN EFFECT FROM 10 AM MONDAY TO 6 PM PDT TUESDAY...

* WHAT...Temperatures 93 to 100 expected for the valleys and
  mountains. Temperatures up to 106 expected for the Inland Empire.

* WHERE...Orange County Inland Areas, San Bernardino and Riverside
  County Valleys-The Inland Empire, San Diego County Valleys, and
  Santa Ana Mountains and Foothills.

* WHEN...From 10 AM Monday to 6 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.


Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.


&&

$$

Zuber

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE