Residents in the Humboldt to Watrous area may want to take caution on the roads for the next few days as fog hampers visibility on the highways.

The fog is expected to hang around for Thursday and Friday, as Watrous is under a fog advisory.

Environment Canada says it will likely improve somewhat later today but could reform tonight and start spreading eastward. If traveling, be prepared for areas of near to zero visibility.

Fog advisories are issued when near zero visibility is a possibility.