Aurora Borealis in Calgary

Canada · 51.05°, -114.09° · geomagnetic 57.6° · needs Kp 7

Tonight's aurora forecast for Calgary

30%

Peak chance of a visible display tonight, from the same model the Revon app runs. Calgary needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.7. Short of the threshold, which is what most nights look like here.

Tonight Mon 07 Sep
30%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Calgary

Calgary is located at 57.6° geomagnetic latitude. Auroras are typically visible at this latitude during intense geomagnetic storms, which are classified as Kp 7 or higher.

On average, there are about 2.7 nights per year suitable for aurora viewing in this region. These opportunities are infrequent and require specific conditions.

The best months for aurora viewing in Calgary are September, August, and November. These months offer a good balance of darkness and potential aurora activity.

During June and July, Calgary experiences periods without full darkness, which can significantly reduce the visibility of auroras.

Calgary has a Bortle scale rating of 8, indicating significant light pollution. This can make faint auroras difficult to see.

Areas with darker skies, such as Bortle 4 skies 46 km east-north-east near Rocky View County and Bortle 5 skies 32 km north-east near Rocky View County, offer better viewing conditions.

The horizon in Calgary is shaped by features including St. George Island (3.5 km east), St. Patrick Island (3.5 km east), Edworthy Park (5.1 km west-north-west), Nose Hill Park (7.2 km north-north-west), and Nose Hill (8.2 km north-north-west).

Geographic features near Calgary that may offer varied horizons include St. George Island, located 3.5 km to the east, and St. Patrick Island, also 3.5 km to the east.

Further afield, Edworthy Park is situated 5.1 km west-north-west of the city, while Nose Hill Park lies 7.2 km north-north-west.

The prominent landform known as Nose Hill is located 8.2 km north-north-west of Calgary.

Between 2016 and 2026, there were approximately 2.7 nights per year with conditions suitable for aurora viewing in the Calgary region.

Historical records show verified aurora sightings, with 230 reports logged between January 1, 2015, and December 31, 2016, within a 300 km radius.

Notable qualifying nights within the 2016-2026 record span include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), November 12, 2025 (Kp 7.33), and November 11, 2025 (Kp 8.67).

Sources: Revon location dataset · Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports

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Nearby towns

Forecasts for places within reach of Calgary.