Environment Canada has issued fog advisories for inland sections of the North Coast and the Highway 16 corridor between Terrace and Smithers.
Forecasters say conditions are favourable to fog.
While the foggy conditions have lifted during the day, dense heavy fog is expected to return Wednesday night and persist until Thursday afternoon as a weather system moves into the area.
Fog advisories are issued when near zero visibility is expected or occurring.
Check DriveBC for highway conditions.