Heat Advisory
Status
Event Continued Active alertStart Time
Tue 08/18/2026 10:33 PM EDTEnd Time
Thu 08/20/2026 11:00 PM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Pomona, CA ∙ Santa Clarita, CA ∙ Pasadena, CA ∙ Glendale, CA ∙ El Monte, CA ∙ West Covina, CA ∙ Alhambra, CA ∙ Whittier, CA ∙ Baldwin Park, CA ∙ Monterey Park, CAFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 733 PM PDT Tue Aug 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY... * WHAT...High temperatures ranging from 95 to 105 degrees. Low temperatures in the upper 60s to lower 70s, except mid 70s to lower 80s in the foothills and mountains. * WHERE...A portion of southwest California. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses. Warmer than normal low temperatures will add to the heat discomfort. 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.
Technical Header
CAZ038-088-343>345-353-371>373-375-376-379-380-548-190900- /O.CON.KLOX.HT.Y.0013.000000T0000Z-260821T0300Z/ Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San Luis Obispo County Interior Valleys-San Luis Obispo County Mountains-Santa Barbara County Interior Mountains-Calabasas and Agoura Hills-Western San Fernando Valley-Eastern San Fernando Valley-Santa Susana Mountains-Southern Ventura County Mountains- Western San Gabriel Mountains and Highway 14 Corridor-Eastern San Gabriel Mountains-Los Angeles County San Gabriel Valley- Including the cities of Oat Mountain, Lake Nacimiento, La Canada Flintridge, Warm Springs, Mount Wilson, San Miguel, San Gabriel, Mount Baldy, Templeton, Malibu Lake, Wrightwood, Pomona, Santa Clarita, Burbank, The Angeles Crest Highway, Woodland Hills, Matilija, Carrizo Plain, Van Nuys, Santa Margarita Lake, La Panza Range, Paso Robles, Sunland, Universal City, Pasadena, Shandon, Westlake Village, Valencia, Creston, East Los Angeles, Big Pine Mountain, Chatsworth, Glendale, Newhall, San Rafael Mountain, Mill Creek, Atascadero, Caliente Range, Acton, Figueroa Mountain, Lake Castaic, Northridge, Rose Valley, El Monte, Topatopa Mountains, and New Cuyama 733 PM PDT Tue Aug 18 2026
