Footprints found on an unsealed dirt track in the remote Red Centre are believed to belong to missing bushman Harold Morton.

Key points: Police undertook extensive land and air searches of the region during the weekend

Police undertook extensive land and air searches of the region during the weekend The tracks were found 4.5km from a remote Aboriginal community near Alice Springs

The tracks were found 4.5km from a remote Aboriginal community near Alice Springs Maximum temperatures are set to rise again next week

Mr Morton, 44, was last seen at 6:00am on Friday walking north from the remote Aboriginal community of Ampilatwatja, about 322 kilometres north of Alice Springs.

He was reported missing around 7:00pm that night.

Northern Territory Police have undertaken land and air searches for most of the weekend, with a helicopter deployed to the isolated spot, but have not yet been able to locate Mr Morton.

The only sign of him was some tracks, believed to be his, discovered by community members about 4.5km from Ampilatwatja.

Police were also seeking information on his possible whereabouts from the nearest community of Alparra, 74km from Ampilatwatja, off the Sandover Highway.

Cooler conditions may provide respite

Conditions in Ampilatwatja were more moderate on Sunday after a long and extreme heatwave in the region.

It hit a maximum of 32C.

A resident in the town told the ABC it had been cloudy for most of the day as the search for Mr Morton continued.

But maximum temperatures were set to increase again throughout the week, with a maximum of 35C on Monday and 37C on Tuesday.

Police and Parks and Wildlife officials have put out multiple warnings this summer, urging walkers to reconsider needing to trek into the outback during such hot conditions.

NT Police seeking further info

Mr Morton has been described as an experienced Aboriginal bushman with a skinny build and greying beard.

He is 175 centimetres tall, and was last seen wearing blue jeans, a blue and green polo shirt and runners.

Police have urged anyone in the Ampilatwatja area who may have seen Harold Morton or have information as to his location, to contact police on 131 444.