Aurora Borealis in Ballerup

Denmark · 55.73°, 12.36° · geomagnetic 55.4° · needs Kp 7

Tonight's aurora forecast for Ballerup

5%

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

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

Updated 2026-09-08 10:35 UTC

Local aurora guide for Ballerup

The aurora requires a Kp of 7 or higher to be visible in Ballerup. This is a significant geomagnetic storm level.

At a geomagnetic latitude of 55.4°, Ballerup is not ideally situated for frequent aurora viewing.

On average, there are about 2.5 nights per year with conditions suitable for aurora viewing in this region.

The best months for aurora viewing in Ballerup are September, November, and August. These months offer a good balance of darkness and potential aurora activity.

During May, June, and July, the region experiences periods without full darkness, which can significantly reduce the chances of seeing the aurora.

Ballerup is classified as Bortle 7, indicating significant light pollution that can obscure aurora visibility.

Areas with darker skies, such as Bortle 4 near Halsnæs Municipality (37 km north-west) and Bortle 5 near Gribskov Municipality (31 km north-north-west), offer better viewing conditions.

Local terrain features include Søndersø lake (4.9 km north), Kong Svends Høj hill (5.0 km west-north-west), and Højnæsbjerg hill (6.4 km north-east), which may affect sightlines.

Søndersø, a lake located 4.9 km north of Ballerup, is a local feature that may offer viewing opportunities.

Kong Svends Høj, a hill situated 5.0 km west-north-west of Ballerup, provides elevated terrain.

Højnæsbjerg, another hill 6.4 km north-east of Ballerup, and Bagsværd Sø lake, 7.5 km north-east, are also nearby geographical points.

There have been 6 verified aurora reports within 300 km of Ballerup between January 1, 2015, and December 31, 2016.

The period from 2016 to 2026 has recorded several nights with Kp values of 7.0 or higher, indicating potential for aurora visibility.

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

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Nearby towns

Forecasts for places within reach of Ballerup.