Travel conditions may become dicey for drivers in London and the surrounding area.
Environment Canada has issued a fog advisory for London and Middlesex County as dense fog formed in the local region late Monday afternoon.
The weather agency said visibility is expected to be reduced to zero if it isn't already.
Drivers should be prepared for areas of near-zero visibility and are advised to turn on their lights while maintaining a safe following distance.
Visibility is expected to improve as the fog dissipates before Tuesday morning.
