Man missing in NSW Blue Mountains

Land and air searches have failed to find a man who has been missing for days in NSW's Blue Mountains.

Peter Boccanfuso, 69, was last seen leaving his Lawson home at 6am on Thursday.

His car was found at Perry's Lookout at Blackheath about 8pm that night.

Searches by police, the Rural Fire Service and the SES have so far been unsuccessful.