Aurora Borealis in Björlanda
Sweden · 57.77°, 11.83° · geomagnetic 57.5° · needs Kp 7
Tonight's aurora forecast for Björlanda
30%
Peak chance of a visible display tonight, from the same model the Revon app runs. Björlanda needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.8. Short of the threshold, which is what most nights look like here.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:36 UTC
Local aurora guide for Björlanda
Björlanda is at a geomagnetic latitude of 57.5°.
Auroras are typically visible at this latitude during periods of high geomagnetic activity, such as when the Kp index reaches 7.
On average, there are about 2.4 nights per year when conditions are suitable for aurora viewing in this region.
The best months for aurora viewing in Björlanda are September, November, and March.
During May, June, and July, the region experiences prolonged daylight, meaning there is no full darkness.
Björlanda experiences a Bortle 7 rating for light pollution.
Areas with darker skies, rated Bortle 4, can be found approximately 35 km west near Öckerö kommun.
Further west, around 20 km away, lies an area with a Bortle 5 rating.
To the north-north-west of Björlanda is Klubbe Näs, a headland located 3.8 km away.
West of Björlanda, you can find Nordre Älvs Fjord, a bay situated 4.9 km away.
Further west-north-west are the islands of Stora Kalven (6.2 km) and Bastö (7.8 km). Ryskärsfjorden, a bay, is located 9.5 km to the north-west.
Between 2015 and 2016, 23 verified aurora reports were recorded within 300 km of Björlanda.
The period from 2016 to 2026 has seen several nights with high geomagnetic activity.
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 Björlanda forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Björlanda.