Aurora Borealis in Täby
Sweden · 59.44°, 18.07° · geomagnetic 58.1° · needs Kp 5
Tonight's aurora forecast for Täby
42%
Peak chance of a visible display tonight, from the same model the Revon app runs. Täby needs Kp 5 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 10:35 UTC
Local aurora guide for Täby
Täby is located at 58.1° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5 or higher.
With an average of 21.3 viable nights per year, patient observers may have opportunities to witness auroral activity.
The historical record spans from April 2, 2016, to March 30, 2026.
The best months for aurora viewing in Täby are September, March, and October.
During May, June, July, and August, there is no full darkness, which can obscure aurora visibility.
Täby experiences a Bortle 7 sky, indicating significant light pollution.
Darker skies, rated Bortle 4, can be found approximately 36 km north-east near Norrtälje kommun.
Areas with Bortle 5 conditions are located about 25 km east-north-east near Österåkers kommun. Nearby features include the lake Mörtsjön 3.1 km west-north-west, the lake Fjäturen 4.8 km west-north-west, the hill Ullnabacken 5.1 km north-east, the hill Törnberget 7.4 km west-north-west, and the reserve Törnskogen 7.7 km west-north-west.
Features near Täby include the lake Mörtsjön, located 3.1 km west-north-west.
Further west-north-west are the lake Fjäturen, 4.8 km away, and the hill Törnberget, 7.4 km away.
To the north-east is the hill Ullnabacken, 5.1 km away, and to the west-north-west is the reserve Törnskogen, 7.7 km away.
Historical data shows 30 verified aurora reports within 300 km of Täby between January 1, 2015, and December 31, 2016.
The period from April 2, 2016, to March 30, 2026, includes several nights with Kp values of 5.0 or higher, such as March 24, 2026 (Kp 5.0), March 23, 2026 (Kp 5.0), March 21, 2026 (Kp 6.0), and March 20, 2026 (Kp 7.0). March 22, 2026, recorded a Kp of 6.67.
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
Know when it is worth going outside
Revon watches the Täby 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 Täby.