The Parkland remains under a fog advisory on Friday morning.
Environment Canada says the near-zero visibility is occurring over some areas.
They say the combination of clear skies, light winds and melting snow create ideal conditions for fog development.
Conditions in most areas are expected to improve later this morning, but the reduced visibility could continue into the early afternoon.
Officials are urging those in the affected areas to drive according to the conditions, and use a safe following distance.
Along with the reduced visibility, slick and slippery roads are also being reported in some areas.
Widespread fog is not expected again Friday night due to strengthening southerly winds across the eastern prairies.
