Fog over the Tri-Cities Airport in Pasco has not majorly affected flights so far today.
Upcoming arrivals and departures are currently running on time, according to www.flights-now.com/.
Patchy freezing fog is expected until about 2 p.m. Thursday., according to the National Weather Service. Current visibility is about a half-mile, with a temperature of 26 degrees. A high of 35 degrees is expected on Thursday.