Aurora Borealis in Borlänge

Sweden · 60.49°, 15.44° · geomagnetic 59.5° · needs Kp 5

Tonight's aurora forecast for Borlänge

52%

Peak chance of a visible display tonight, from the same model the Revon app runs. Borlänge 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.

Tonight Tue 08 Sep
52%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Borlänge

Borlänge generally needs planetary Kp 5 before the aurora borealis reaches the local sky. Historical Kp and darkness data produce about 20.6 viable nights a year across 10.0 years of records.

The strongest historical overlap of darkness and activity occurs in September, March and October. From May through August, limited astronomical darkness can prevent viewing.

The central sky is approximately Bortle 8. The supplied darker-sky reference is 10 km west at Bortle 5.

Aurorasaurus recorded 94 verified reports within 300 km of Borlänge between 2015-01-01 and 2016-12-31. These records describe past observations, not tonight's prediction.

Sources: Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · Aurorasaurus verified positive reports

Know when it is worth going outside

Revon watches the Borlänge 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 Borlänge.