Heatwave bears down on Queensland as fires rage

Two homes have been gutted, among 10 buildings hit by bushfires raging across Queensland, as heatwave-conditions continue to grip the state.

Much of the state is sweltering, with temperatures expected to reach about 12C above the December average in coming days, the Bureau of Meteorology says.

The severe fire conditions have emergency crews on alert, including 15 crews fighting a blaze in the Queensland Darling Downs on Friday morning.

Queensland Fire and Emergency Service told AAP so far the fire has hit 10 buildings, with two houses confirmed gutted by the inferno.

The fire which forced residents at Forest Ridge and Cypress Gardens, near Millmerran, to flee their homes had blackened almost 1200 hectares as of Thursday afternoon.

Queensland Police announced those residents were able to return to their homes on Friday morning while the Queensland Fire and Emergency Services downgraded the fire status to Watch and Act.

Residents are being told to follow their bushfire survival plans and be ready to leave as "the situation could get worse quickly".

More than 200,000 hectares have been burnt across the state since the beginning of the unprecedented bushfire season.

Since early November about 20 homes have burned to the ground.

Temperatures above 40C are expected in the Lockyer Valley and Ipswich just west of Brisbane.

"In eastern parts of Queensland, we are experiencing heatwave conditions as we are seeing temperatures between two and six degrees above average," the Bureau of Meteorology's Jess Gardner said.

"That will continue to increase over the coming days, peaking on Friday and Saturday getting up to 12 degrees above average."