Environment Canada issued a fog advisory Tuesday for parts of west-central Saskatchewan.
The weather agency said dense fog has developed along the Yellowhead highway, portions of highway 11, as well as in areas to the east and north of Regina.
Cities included in the advisory are Lloydminster, North Battleford, and Saskatoon.
Drivers are urged to use caution with near zero visibility conditions being reported.
The fog is expected to lift Tuesday afternoon.