Firefighters will work throughout the night to extinguish the recycling fire at Pialligo.
The fire has been contained by firefighters by breaking up the pile using heavy machinery.
The smoke was caused by a mechanical failure in an air conditioning system.
ACT Fire & Rescue is investigating reports of smoke in the diagnostics area of The Canberra Hospital.
Fire crews are working to contain then extinguish the fire using water and foam while heavy machinery reduce the size of the pile.
A total of ten units from ACT Fire & Rescue and ACT Rural Fire Service are now on scene.
Firefighters are working to extinguish a mulch and rubbish pile fire at Pialligo.
Firefighters are checking for damage to surrounding buildings after extinguishing a fire in a Manuka restaurant.
The ACT Rural Fire Service (ACTRFS) is conducting two hazard reduction burns today at Majura.
The fire has now been completely extinguished.