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 pre-emptive action.
According to Environment Canada the air quality index in Okotoks is at 3 or low risk.
It's forecast to hit 5 or moderate later today.