Bloemfontein - The N6 between Rouxville, in the Free State, and Aliwal North, in the Eastern Cape, has been closed because of veld fires, the Free State roads department said on Thursday.
Spokesman Saki Mohoni said the road was closed at 3pm on Thursday.
Firefighters were also battling a veld fire in the mountains between Rosendal and Fouriesburg, in the eastern Free State.
Dust carried by strong winds had shrouded Bloemfontein in near darkness on Thursday afternoon.
Sapa