The Waterloo Fire Department responded to an apartment balcony fire on Thursday.
The fire was reported around 4:30 p.m. at a residential building on King St. South.
Crews were able to confine the fire to the balcony and no injuries were reported.
It was a high-visibility response due to the amount of traffic in the area, which included the LRT.
As a result, King St. South was temporarily closed between John St. and Allen St. The road reopened around 5:30 p.m.
The cause of the balcony fire continues to be investigated and damage is estimated at under $100,000.
Firefighters fought the flames while grappling with high-risk air quality because of drifting wildfire smoke from northern Ontario.