Northern Lights Tonight in Calgary, Alberta

Calgary sits on the Prairie side of the foothills, which is a good place to be for aurora. The threshold of 3.8 is reached on a fair number of nights each year, and the Prairie sky is often clear and dry in midwinter. A big storm does not have to happen for you to see a green arc low in the north.

The city itself is the main obstacle. Downtown and the suburbs throw a wide light dome, and Airdrie adds its own glow right on the northern horizon, so the sky you want is the one most polluted. The Rocky Mountains block the west, which does not matter for aurora, but cloud banks pushed over the range can drift in and close the sky within an hour. Winter chinook winds sometimes clear the cloud completely and bring a warm night, so check the cloud layer before you commit to a drive.

Locals who chase the lights usually leave the ring road and head for open ranch country, either west toward the foothills or east and south on the Prairie, where the land is flat and a northern view is not broken by trees. Pick a spot where the road does not point toward the city, wait twenty minutes for your eyes to adjust, and watch the northern horizon rather than the zenith. Strong displays also show up as a faint glow even from the edge of town, so a quiet night is still worth a short look.