The National Weather Service said the dense fog advisory was in effect through 10 a.m. Monday.
The advisory covered most of the state, including all of metro Atlanta.
Cities included in the advisory included Rome, Dalton, Dahlonega and Blairsville in the northern part of the state. Officials said the advisory also covered Americus, Athens, Columbus, Dublin, LaGrange, Macon and Vidalia.
The weather service said visibility would be reduced to less than a quarter-mile, and rapid drops in visibility would make travel treacherous on roads.