Weather Alerts For El Cajon, CA

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1124 PM PST Sat Dec 13 2025 San Diego County Coastal Areas-San Diego County Valleys- Including the cities of Santee, San Marcos, Escondido, La Mesa, Encinitas, El Cajon, Vista, and Carlsbad 1124 PM PST Sat Dec 13 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM PST SUNDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...San Diego County Coastal Areas and San Diego County Valleys. * WHEN...Until 9 AM PST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous, including along portions of I-15, I-8, and Highway 163. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&