Aurora Borealis in Hollola
Finland · 61.05°, 25.43° · geomagnetic 58.5° · needs Kp 5
Tonight's aurora forecast for Hollola
34%
Peak chance of a visible display tonight, from the same model the Revon app runs. Hollola needs Kp 5 to see anything at all, and tonight the forecast peaks at Kp 4.7. 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 Hollola
Hollola is located at 58.5° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5.
On average, there are 20.1 nights per year in Hollola where conditions are suitable for aurora viewing.
This data is based on observations between April 2, 2016, and March 30, 2026.
The best months for aurora viewing in Hollola are September, March, and October.
During May, June, July, and August, there is no full darkness, which can impact viewing conditions.
Hollola experiences a Bortle 6 sky brightness. This indicates a level of light pollution.
Areas with darker skies are located nearby. Bortle 3 skies are found 23 km north near Asikkala, and Bortle 5 skies are 11 km west-south-west near Hollola.
Local terrain features include islands, hills, lakes, and headlands, which may affect viewing.
Pölkky, an island located 3.0 km north of Hollola, offers a potential viewing location.
Marjastenmäki, a hill 3.0 km east-north-east of Hollola, is another area.
Koveroistenjärvi lake (3.6 km west), Näsinkärki headland (3.6 km north), and Siikaniemi headland (3.9 km north-west) are also nearby geographical features.
Between January 1, 2015, and December 31, 2016, there were 41 verified aurora reports within 300 km of Hollola.
The record span for viable nights per year extends from April 2, 2016, to March 30, 2026.
Notable qualifying nights include March 20-24, 2026, with Kp values ranging from 5.0 to 7.0.
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 Hollola 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 Hollola.