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Dense Fog Advisory Issued for San Francisco Bay Area, Dissipating by 10 AM

A Dense Fog Advisory is in effect for parts of the San Francisco Bay Area until 10 AM PDT today, October 6, with widespread dense fog expected to dissipate, according to the National Weather Service.

Staff Writer
10/06/2026 · Petaluma edition

A Dense Fog Advisory has been issued for several areas of the San Francisco Bay Area, including San Francisco, the Coastal North Bay including Point Reyes National Seashore, the San Francisco Peninsula Coast, Northern Monterey Bay, and the Southern Monterey Bay and Big Sur Coast. The advisory is effective immediately, October 6, 2026, at 8:52 AM PDT, and is set to expire today, October 6, 2026, at 10:00 AM PDT.

According to the National Weather Service (NWS) San Francisco CA, while patchy fog will linger through the morning, widespread dense fog is expected to continue to dissipate rapidly. This advisory highlights the expected conditions as the morning progresses.

Readers in the affected areas are advised to exercise caution, especially during their morning commute, as visibility may be reduced in lingering fog patches. Drivers should be prepared for sudden changes in visibility. The NWS did not provide additional specific safety instructions beyond the expectation of dissipating fog.

This alert is issued by NWS San Francisco CA.

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