On Sunday at 3:28 a.m. the National Weather Service issued a dense fog advisory in effect until 7 a.m. for Passaic and Bergen counties.

The National Weather Service issued a dense fog advisory at 3:17 a.m. on Sunday in effect until 9 a.m. for Lower Bucks and Philadelphia County.

Showers with areas of fog will hang around overnight Saturday and into the part of Sunday morning. Some places across the Lehigh Valley will have to navigate through some dense fog where the visibility will be less than one mile.