ACT Fire & Rescue and ACT Rural Fire Service crews have contained the grass fire at Simpsons Hill near Chisholm.
There are 15 crews on scene currently mopping up and blacking out the fire. The crews will remain on scene through the night patrolling the fire.
The fire is now under control and is three hectares in size.
One firefighter has been transported to the Canberra Hospital as a result of heat exhaustion.
The Fire Danger Rating where this fire is burning is VERY HIGH.