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.