PITTSBURGH (KDKA) — The National Weather Service Pittsburgh has issued a Dense Fog Advisory for parts of Western Pennsylvania.

The warning is in place until 10 a.m. on Wednesday.

READ MORE: Westmoreland County Election Officials Ready For November

Officials say the fog will continue to impact travel across the region. There will be low visibility.

Fog with visibility of 1/4 of a mile or less is expected for several hours.

READ MORE: Doctors Say There Are Multiple Reasons For Spike In Emergency Room Wait Times

The advisory is impacting parts of Allegheny, Beaver Butler, Lawrence, Mercer and Washington counties.

At least 20 arriving flights and seven flights from Pittsburgh Internation Airport were canceled because of the fog.

MORE NEWS: Pittsburgh Police Officer Richard Howe Dies Of COVID-19 Complications, City Says

https://platform.twitter.com/widgets.js