Fog advisory in effect for Niagara

Niagara is under a fog advisory this morning, along with Hamilton and Toronto.

Environment Canada warning there could be near zero visibility this morning in some areas around the region.

The weather office says near zero visibility is expected or occurring.

Dense fog has already developed in some areas and is expected to continue early this morning.

As a result, visibility will be reduced to near zero.

The visibility is expected improve by mid-morning as the dense fog lifts.