A voluntary evacuation was ordered for people in Waterton Lakes National Park Tuesday night.
Parks Canada says it's because of what they're calling a "serious wildfire" that's threatened the community.
The evacuation order includes the park and the community of Waterton.
Parks Canada says, there's no immediate threat, but this they're taking pre-emptive action now.
According to Environment Canada the air quality index in Calgary is at 3 or low risk.
It's forecasted to hit 5 or moderate later today.