Santa Clarita Valley-Lake Casitas-Ojai Valley-Central Ventura
County Valleys-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-Northern Ventura County
Mountains-Interstate 5 Corridor-Western San Gabriel Mountains and
Highway 14 Corridor-Eastern San Gabriel Mountains-Western
Antelope Valley Foothills-Eastern Antelope Valley Foothills-Los
Angeles County San Gabriel Valley-
Including the cities of Oak View, Pasadena, Mount Baldy, Tejon
Pass, Woodland Hills, Sunland, Simi Valley, Burbank, Westlake
Village, Elizabeth Lake, Lake Palmdale, Mount Wilson, Llano,
Ojai, Topanga, Universal City, Gorman, Newbury Park, Warm
Springs, Malibu Lake, Oat Mountain, Rose Valley, Pyramid Lake,
Santa Clarita, Valencia, La Canada Flintridge, East Los Angeles,
Thousand Oaks, Chatsworth, Topatopa Mountains, Santa Paula,
Wrightwood, Fillmore, Pomona, Valyermo, Meiners Oaks, Newhall,
Malibu Bowl, The Angeles Crest Highway, Lake Castaic, Moorpark,
San Gabriel, Northridge, Lockwood Valley, Van Nuys, Piru, Mount
Pinos, Pearblossom, El Monte, Acton, Matilija, Ozena, Mill Creek,
and Glendale
1226 PM PDT Mon Jul 20 2026
...HEAT ADVISORY IN EFFECT FROM 10 AM TO 8 PM PDT WEDNESDAY...
...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
MONDAY EVENING...
* WHAT...For the Heat Advisory, temperatures between 93 to 103
expected. For the Extreme Heat Watch, dangerously hot conditions
with temperatures between 97 and 107 possible.
* WHERE...A portion of southwest California.
* WHEN...For the Heat Advisory, from 10 AM to 8 PM PDT Wednesday.
For the Extreme Heat Watch, from Wednesday evening through Monday
evening.
* 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. 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...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors
