A small fire burning in the remote area of Namadgi National Park is under control.
The ACT Emergency Services Agency said favourable weather conditions on Monday helped firefighters as they worked to extinguish the Hospital Hill fire and build containment lines.
The fire, which was believed to have been ignited by lightning, was less than one kilometre in size. It was burning 34 kilometres from the closest residential suburb and posed no threat to properties.
Two strike teams at the fire had managed to build six kilometres of containment lines within the ACT border and were working with the NSW RFS to establish containment lines outside the territory.
Waterbombing had also be used to contain the blaze. The ACT's special intelligence-gathering helicopter would continue monitoring the fireground.
Fire crews will also patrol and monitor the fire in the coming days to guard against any flare ups.
A total fire ban is likely to be declared for the ACT for Friday, when temperatures are forecast to reach 38 degrees.
ESA commissioner Georgeina Whelan reminded Canberrans to be prepared for potential bushfires.
"My aim is that the fires do not get anywhere near our residents. But in the event that they do we need you to be bushfire ready," she said.
