Aurora Borealis in Lethbridge

Canada · 49.70°, -112.82° · geomagnetic 56.4° · needs Kp 7

Tonight's aurora forecast for Lethbridge

12%

Peak chance of a visible display tonight, from the same model the Revon app runs. Lethbridge 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
12%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Lethbridge

The aurora borealis is visible from Lethbridge at a geomagnetic latitude of 56.4°.

Auroral displays visible from Lethbridge require a Kp index of 7 or higher.

On average, there are 3.0 nights per year with auroral displays visible from Lethbridge.

The best months for aurora viewing in Lethbridge are May, September, and August.

June experiences no full darkness, which can impact viewing conditions.

Lethbridge is classified as Bortle 5, indicating moderate light pollution.

Areas with Bortle 4 conditions, offering darker skies, can be found 24 km east-north-east near Lethbridge County.

Darker Bortle 5 conditions are available 7 km north-east near Lethbridge County.

Eight Mile Lake is a lake located 12.8 km north-east of Lethbridge.

Park Lake Provincial Park is a park situated 13.2 km north-north-west of Lethbridge.

Park Lake is a lake 14.3 km north-north-west of Lethbridge, and Scabby Butte, a mountain, is 27.5 km north-north-west of Lethbridge. Wild Turnip Hill is a hill 21.7 km west-south-west of Lethbridge.

There have been 101 verified aurora sightings reported within 300 km of Lethbridge between January 1, 2015, and December 31, 2016.

The historical record spans from April 2, 2016, to March 30, 2026.

Notable qualifying nights 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 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

Know when it is worth going outside

Revon watches the Lethbridge forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

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Nearby towns

Forecasts for places within reach of Lethbridge.