The largest dark-sky preserve on Earth. Aurora nearly every clear night.
Updated: · Tonight: Friday, August 14, 2026
Wood Buffalo National Park became the world's largest Dark Sky Preserve when the Royal Astronomical Society of Canada designated it in 2013, covering all 44,807 km² of Canada's biggest national park. It straddles the Alberta–NWT border around Fort Smith and Fort Chipewyan, and its size alone means there is essentially no light pollution to escape — the park is bigger than several countries.
Frequent aurora displays, an exceptionally deep Milky Way, and the zodiacal light in spring and autumn.
Late August through October for aurora — nights are dark enough and long enough, and the bugs have eased off. Winter offers the longest, darkest nights but demands serious cold-weather preparation.
Tonight's verdict above is a build-time snapshot. For the full hourly view — cloud cover, transparency, seeing, smoke, humidity, moon altitude and a Bortle-aware tonight score by observing mode (visual, deep-sky, planetary, astrophoto) — open the live forecast:
Live 48-hour forecast for Wood Buffalo → Full editorial guide
Tonight's verdict is Fair (Medium confidence). Short 2h window, otherwise mean cloud 38%. Worth a look if you're nearby.
Late August through October for aurora — nights are dark enough and long enough, and the bugs have eased off. Winter offers the longest, darkest nights but demands serious cold-weather preparation.
Fly to Fort McMurray or Fort Smith, NWT, then drive in — there is no realistic road trip from central Canada; most visitors base out of Fort Smith.
Frequent aurora displays, an exceptionally deep Milky Way, and the zodiacal light in spring and autumn.
Wood Buffalo sits at Bortle class 1 on the 1–9 dark-sky scale, where 1 is a pristine wilderness sky and 9 is an inner-city sky.