As the day comes to a close...

AAP

There are currently four fires burning out of control at an emergency level across NSW. These include the 'mega fire' at Gospers Mountain, and fires at Currowan, Kerry Ridge and Upper Turon Road, Palmers Oaky.

Southerly winds are pushing the Upper Turon Road fire towards Clandulla where properties are in danger.

Properties in the Bilpin and Bells Line of Road area are also under threat tonight.

The RFS has said that potentially dozens of homes have been damaged today, and one local man is unaccounted for at Dargan near Lithgow. Authorities say they don't expect to have any further information of his whereabouts until they can check in on the property tomorrow.

Five firefighters have been injured today. Two were taken to Lithgow hospital for smoke inhalation and breathing problems, another treated at the scene in Lithgow for breathing problems, one treated on the scene at Picton for heat exhaustion, and one treated after being hit by a car driving along a road where firefighters were operating.

The RFS is expecting about a week of more favourable weather conditions from tomorrow, during which they'll do as much backburning as possible before the fire danger escalates again at the end of next week.

Earlier today the RFS said it's unlikely they'll get on top of the current fires "until we get some decent rain".