Dense Fog Advisory

Locations Affected

Pasadena, CA ∙ Thousand Oaks, CA ∙ Pomona, CA ∙ Glendale, CA ∙ El Monte, CA ∙ West Covina, CA ∙ Simi Valley, CA ∙ Whittier, CA ∙ Alhambra, CA ∙ Baldwin Park, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 523 AM PST Tue Nov 4 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Calabasas and Agoura Hills, Central Ventura County Valleys, Eastern San Fernando Valley, Lake Casitas, Los Angeles County San Gabriel Valley, Ojai Valley, Santa Ynez Valley, Southeastern Ventura County Valleys, and Western San Fernando Valley. * WHEN...Until 9 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Near zero visibility may occur at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If you decide to leave the roadway due to thick dense fog, pull completely and as far off the roadway as possible and turn off your lights.

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