A fog advisory remains in effect for Niagara.
Environment Canada says dense fog patches will mean some tricky driving conditions this afternoon.
Areas of dense fog with near zero visibility will continue to impact the region this afternoon.
In addition, with temperatures near or a little below the zero degree mark in some areas, untreated roads may suddenly become icy and slippery.
Motorists should drive according to the weather and road conditions and allow extra time to reach their destination.
Fog is expected to lift later this afternoon.