Aurora Borealis in Anchorage

United States · 61.22°, -149.90° · geomagnetic 61.9° · needs Kp 5

Tonight's aurora forecast for Anchorage

41%

Peak chance of a visible display tonight, from the same model the Revon app runs. Anchorage needs Kp 5 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
41%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Anchorage

Anchorage is located at 61.9° geomagnetic latitude.

Auroras are typically visible when the planetary Kp index reaches 5.

There are approximately 20.1 nights per year with conditions suitable for aurora viewing.

The best months for aurora viewing in Anchorage are September, October, and March.

During May, June, July, and August, there is insufficient darkness for aurora viewing.

Anchorage has a Bortle scale rating of 6, indicating moderate light pollution.

Areas with darker skies, such as Bortle 4 and 5, can be found within 32 km.

Potential viewing locations include Paxton Memorial Park, Salmon Run Park, Cairn Point, Point MacKenzie, and Lazy Lake.

Between 2016 and 2026, there were 20.1 nights per year suitable for aurora viewing.

Records show verified sightings in the region between 2015 and 2016.

Notable aurora events occurred on March 20-24, 2026, with Kp values ranging from 5.0 to 7.0.

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 Anchorage.