A dense fog advisory is in effect until 1 p.m. Wednesday for the Perry area and much of Iowa, and a wind advisory remains in effect until 7 p.m.
The widespread dense fog will persist into the late morning hours. Visibility will be one-quater mile or down to near zero through the morning hours.
Strong winds will increase later Wednesday morning, helping to dissipate the dense fog. Southeast winds at 25 to 35 mph are expected, with gusts to 45 mph, from midday into the early evening.
Some light drizzle is also expected in the dense fog areas.
Along with Dallas County, the dense fog and winds are predicted for Audubon, Guthrie, Polk, Cass, Adair, Madison, Warren, Marion, Mahaska, Adams, Union, Clarke, Lucas, Taylor, Ringgold and Decatur counties.
Perry and the following cities are affectedby the dense fog and winds: Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, Knoxville, Oskaloosa, Corning, Creston, Osceola, Chariton, Bedford, Lenox, New Market, Mount Ayr, Lamoni and Leon.
The very dense fog will make travel dangerous at times. Even in daylight, motorists should use low-beam headlights and allow extra space between vehicles. Gusty winds will also make travel difficult for high-profile vehicles later Wednesday, especially during the evening commute.