Dense fog advisory affecting Los Angeles County until Tuesday morning — visibility down to 1/4 mile

Dense Fog Advisory in Los Angeles County

The National Weather Service issued a dense fog advisory for Los Angeles County on Tuesday at 5:23 a.m., effective until 9 a.m.

Visibility and Conditions

Visibility is expected to be one quarter mile or less, with occasional near-zero visibility.

“Visibility one quarter mile or less in dense fog,” according to NWS Los Angeles/Oxnard CA.
“Near zero visibility may occur at times.”

Low visibility creates hazardous driving conditions.

Driving Safety Recommendations

“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.”

Advice for Affected Areas

The advisory means widespread dense fog reduces visibility to a quarter mile or less, making travel risky. Drivers should exercise extreme caution or consider postponing trips if possible.

Summary of Safe Driving Practices

Author's summary: Dense fog in Los Angeles County is causing low visibility and hazardous driving; following vehicle safety tips is essential to prevent accidents during the advisory period.

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Los Angeles Daily News Los Angeles Daily News — 2025-11-04