A dusty mist has blanketed south-east Queensland on Saturday morning, brought across from inland parts of the state as a trough moves towards the coast.

Bureau of Meteorology senior forecaster Rick Threlfall said the strong trough had moved through southern Queensland on Friday and "kicked up quite a lot of dust" before moving west overnight and bringing the fog to the south-east.

Mr Threlfall said the dusty haze was "pretty widespread", covering Brisbane, extending north to the Sunshine Coast and all the way down to the New South Wales border.

"It could take a little while to clear throughout today, it has certainly been hanging around during the last few hours this morning," he said.