Heat Advisory

[Wrightwood]

Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San
Luis Obispo County Interior Valleys-San Luis Obispo County
Mountains-Santa Barbara County Interior Mountains-Western San
Fernando Valley-Eastern San Fernando Valley-Santa Susana
Mountains-Southern Ventura County Mountains-Northern Ventura
County Mountains-Interstate 5 Corridor-Western San Gabriel
Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Clarita, Creston, Matilija, Carrizo
Plain, Santa Margarita Lake, Northridge, La Canada Flintridge,
Topatopa Mountains, El Monte, Mill Creek, Paso Robles, Rose
Valley, Newhall, Templeton, Tejon Pass, Warm Springs, Mount
Wilson, Pomona, New Cuyama, Valencia, Woodland Hills, Ozena,
Pyramid Lake, Atascadero, Universal City, Oat Mountain, The
Angeles Crest Highway, Mount Baldy, Lake Nacimiento, Shandon,
Acton, San Gabriel, San Miguel, Lake Castaic, Van Nuys, Figueroa
Mountain, Lockwood Valley, Big Pine Mountain, Caliente Range,
Glendale, La Panza Range, Burbank, Pasadena, Wrightwood,
Chatsworth, East Los Angeles, San Rafael Mountain, Gorman,
Sunland, and Mount Pinos
940 AM PDT Sun Jul 5 2026

...HEAT ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT THURSDAY...

* WHAT...Temperatures from 90 to around 100 expected...except up to
103 across the warmest mountains and interior valleys of San Luis
Obispo county.

* WHERE...Interior mountains of Los Angeles, Ventura, Santa Barbara,
and San Luis Obispo counties as well as the San Fernando, San
Gabriel, Santa Clarita, Cuyama and San Luis Obispo interior
valleys.

* WHEN...From 10 AM Tuesday to 8 PM PDT Thursday.

* 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...The warmest temperatures with this event are
expected to occur Wednesday and Thursday afternoons, with
additional locations potentially being needed to be added to this
advisory with time. Temperatures are expected to cool slightly
after Thursday in some locations, but will remainabove normal into
the following week.

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.

[Wrightwood]

Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San
Luis Obispo County Interior Valleys-San Luis Obispo County
Mountains-Santa Barbara County Interior Mountains-Western San
Fernando Valley-Eastern San Fernando Valley-Santa Susana
Mountains-Southern Ventura County Mountains-Northern Ventura
County Mountains-Interstate 5 Corridor-Western San Gabriel
Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-
Los Angeles County San Gabriel Valley-
Including the cities of Lockwood Valley, Universal City, Mount
Baldy, Burbank, Acton, Santa Clarita, Mount Pinos, Wrightwood,
Newhall, Lake Nacimiento, San Miguel, Valencia, Ozena, Topatopa
Mountains, Northridge, New Cuyama, Pomona, Atascadero, Caliente
Range, Templeton, Rose Valley, Van Nuys, Big Pine Mountain,
Glendale, Paso Robles, El Monte, Woodland Hills, Warm Springs,
East Los Angeles, La Panza Range, Pasadena, Pyramid Lake,
Sunland, Santa Margarita Lake, Gorman, Figueroa Mountain,
Chatsworth, Creston, Mill Creek, The Angeles Crest Highway,
Carrizo Plain, Matilija, Oat Mountain, Tejon Pass, Shandon, Mount
Wilson, San Rafael Mountain, Lake Castaic, San Gabriel, and La
Canada Flintridge
1035 AM PDT Mon Jul 6 2026

...HEAT ADVISORY NOW IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT
FRIDAY...

* WHAT...Temperatures from 90 to around 100 expected...except up to
105 across the warmest mountains and interior valleys of San Luis
Obispo county.

* WHERE...Interior mountains of Los Angeles, Ventura, Santa Barbara,
and San Luis Obispo counties as well as the San Fernando, San
Gabriel, Santa Clarita, Cuyama and San Luis Obispo interior
valleys.

* WHEN...From 10 AM Tuesday to 8 PM PDT Friday.

* 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...The warmest temperatures with this event are
expected to occur Wednesday and Thursday afternoons with only a
very modest cool down Friday providing little relief. Temperatures
are expected to cool down slightly more over the weekend, but
remain above normal into the following week.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

[Wrightwood]

San Bernardino County Mountains-
Including the cities of Running Springs, Wrightwood, Crestline,
and Lake Arrowhead
1213 AM PDT Tue Jul 7 2026

...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 8 PM PDT THURSDAY
BELOW 6000 FEET...

* WHAT...High temperatures in the lower to mid 90s below 6000 feet
expected.

* WHERE...San Bernardino County Mountains.

* WHEN...From 10 AM Wednesday to 8 PM PDT Thursday.

* 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.

[Wrightwood]

San Bernardino County Mountains-
Including the cities of Running Springs, Crestline, Wrightwood,
and Lake Arrowhead
1204 PM PDT Wed Jul 8 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT FRIDAY...

* WHAT...High temperatures in the lower to mid 90s below 6000 feet
expected.

* WHERE...San Bernardino County Mountains.

* WHEN...Until 8 PM PDT Friday.

* 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.

&&

[Wrightwood]

San Diego County Coastal Areas-San Bernardino and Riverside
County Valleys-The Inland Empire-San Diego County Valleys-San
Bernardino County Mountains-Riverside County Mountains-Santa Ana
Mountains and Foothills-San Diego County Mountains-San Gorgonio
Pass near Banning-Orange County Coastal Areas-Orange County
Inland Areas-
Including the cities of Orange, Garden Grove, La Mesa, Big Bear
City, Running Springs, San Marcos, Chula Vista, El Cajon,
Ontario, Riverside, San Diego, Big Bear Lake, Idyllwild-Pine
Cove, Poway, Oceanside, Pine Valley, Fontana, Moreno Valley, San
Clemente, Santa Ana, San Bernardino, Laguna Beach, Anaheim,
Corona, Santee, Escondido, Julian, Mission Viejo, Wrightwood,
Encinitas, Fullerton, Crestline, Lake Arrowhead, Vista, Rancho
Cucamonga, Costa Mesa, Irvine, National City, Huntington Beach,
Newport Beach, and Carlsbad
1200 PM PDT Sun Jul 12 2026

...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
THURSDAY EVENING...

* WHAT...Hot and humid conditions with elevated overnight
temperatures. High temperatures will range from the 90s in the
mountains below 6,000 feet, 95 to 105 or more for inland valleys,
and 80s for areas near the coast.

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

* WHEN...From Tuesday morning through Thursday evening, hottest on
Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

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. Limit outdoor
recreation during the daytime hours.

[Wrightwood]

Cuyama Valley-Santa Barbara County Interior Mountains-Interstate
5 Corridor-Western San Gabriel Mountains and Highway 14 Corridor-
Eastern San Gabriel Mountains-
Including the cities of San Rafael Mountain, Tejon Pass, Pyramid
Lake, Wrightwood, Gorman, Acton, Warm Springs, Mount Wilson, Mill
Creek, The Angeles Crest Highway, New Cuyama, Mount Baldy, Big
Pine Mountain, and Figueroa Mountain
838 AM PDT Mon Jul 13 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY...
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT
THURSDAY...

* WHAT...Temperatures of 90 to 110 degrees, hottest on Wednesday and
over interior areas.

* WHERE...Cuyama Valley, Eastern San Gabriel Mountains, Interstate 5
Corridor, Santa Barbara County Interior Mountains, and Western San
Gabriel Mountains and Highway 14 Corridor.

* WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the
Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Thursday.

* IMPACTS...There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors.

* ADDITIONAL DETAILS...Humid conditions will add to the heat to
potentially worsen heat impacts. Effects of the heat will build
through the week, with warm overnight low temperatures providing
little relief from the heat.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.