Dense Fog Advisory

Locations Affected

Concord, CA ∙ Antioch, CA ∙ Livermore, CA ∙ San Ramon, CA ∙ Pleasanton, CA ∙ Pittsburg, CA ∙ Walnut Creek, CA ∙ Brentwood, CA ∙ Bayview, CA ∙ Danville, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 450 AM PST Sat Nov 22 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern and eastern Contra Costa County. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

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