Metro Vancouver commuters are facing a hazardous start to their day on Wednesday, December 31, 2025, as a dense fog advisory blankets the region. Environment and Climate Change Canada has issued an official warning, stating that areas of near-zero visibility are expected to persist through the late morning hours.
Weather Agency Issues Official Advisory
Environment and Climate Change Canada has officially posted a fog advisory for the Metro Vancouver area. The federal weather agency forecasts that visibility will drop to near-zero in some locations, creating dangerous conditions for drivers and pedestrians. The advisory is in effect for the morning of Wednesday, December 31, 2025.
Cause of the Dense Fog
Meteorologists explain that the fog is the result of a specific atmospheric setup. A ridge of high pressure is settling over the region, trapping cool, humid marine air beneath a warm, stagnant air mass. This combination is the perfect recipe for the formation of widespread, thick fog.
Travel Impacts and Safety Warnings
Authorities are urging all residents to take extra caution during the morning commute. Travel is expected to be hazardous, with sudden patches of severely reduced visibility. Drivers are advised to slow down, use low-beam headlights, and increase following distances significantly.
Conditions are predicted to improve once daytime temperatures begin to rise, causing mixing near the surface that will help the fog to dissipate. Until then, Environment Canada stresses that being prepared for rapidly changing visibility is crucial for safety on the roads.
