Aurora Borealis in Karlskoga

Sweden · 59.33°, 14.52° · geomagnetic 58.5° · needs Kp 5

Tonight's aurora forecast for Karlskoga

48%

Peak chance of a visible display tonight, from the same model the Revon app runs. Karlskoga 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
48%
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Karlskoga

Karlskoga generally needs planetary Kp 5 before the aurora borealis reaches the local sky. Historical Kp and darkness data produce about 21.3 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 5. The supplied darker-sky reference is 19 km north at Bortle 3.

Aurorasaurus recorded 95 verified reports within 300 km of Karlskoga 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 Karlskoga 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 Karlskoga.