BUSHFIRES remain a threat across the state in what firefighters have called 'catastrophic' fire danger conditions.
NSW Police have warned the public that the unprecedented conditions will see fire spread quickly on Tuesday.
"Under these conditions, some fires may start and spread so quickly there is little time for a warning, so do not wait and see," a spokesperson said.
"There are simply not enough fire trucks for every house. If you call for help, you may not get it.
"Do not expect a firetruck. Do not expect a knock on the door. Do not expect a phone call."
Smoke from the mid-north coast and Bees Nest fires choked Armidale on Monday.
Health professionals have issued a warning to the public about the air pollution.
"Even if people don't have pre-existing health conditions, it can make people quite unwell," Armidale GP Dr Sujata Allan said.
"If the smoke is bad, people should stay inside and not do activities such as sport that get them out."
People with chronic health conditions, or the elderly, should be particularly careful.
The warnings come as major fires burn at Carrai Creek, Stockyard Flat near Walcha and Torrington in Tenterfield.
Emmaville residents were asked to evacuate on Monday as the out-of-control fire burns through more than 54,200 hectares.
The blaze has affected Torrington, official numbers have not been confirmed by NSW Rural Fire Service but at least 10 houses have reportedly been destroyed.
The NSW Rural Fire Service has issued an extreme fire danger warning on Tuesday for the northern slopes, that includes Tamworth, Gunnedah and the Liverpool Plains.
Temperatures are expected to soar to 35 degrees in Tamworth, 37 in Gunnedah and 36 in Quirindi.
Winds of 20km per hour to 45km per hour are expected to significantly increase the fire danger.
Gusts in elevated areas could exceed 80km per hour, leaving early is the safest option for survival for residents near a fire burning at an extreme rating.
Residents should only consider staying if they have the highest level of preparation.
The public are urged to keep the Fires Near Me phone app on hand and ensure they have prepared a Bushfire Survival Plan. All unattended fires should be reported to Triple Zero (000) immediately.