Morning commuters are advised to take it slow while on the road as dense fog may cause poor visibility in some areas.
Environment Canada has issued a fog advisory for Woodstock, Tillsonburg, and Oxford County.
The national weather agency says travel is expected to be hazardous in some areas because of reduced visibility.
Drivers are being reminded to reduce their speed, turn on the vehicle’s lights, and maintain a safe following distance.
The dense fog is expected to dissipate later Monday morning.