Weather Alerts For Pittsburg, CA

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 156 AM PST Thu Dec 18 2025 East Bay Interior Valleys-Northern Monterey Bay- 156 AM PST Thu Dec 18 2025 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 11 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern Monterey Bay, and East Bay Interior Valleys. * 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. If commuting, allow extra drive time to reach your destination safely. &&