All of Niagara is under a fog advisory this morning.
Environment Canada is warning of there are areas of dense fog with near zero visibility this morning in some areas that is impacting driving conditions.
The weather office adds with temperatures around the freezing mark in some areas, untreated roads may become icy and slippery.
The weather agency reminds motorists to drive according to the weather and road conditions and allow extra time to reach their destination.
The fog is expected to lift later this morning.