Aurora Borealis in Salo

Finland · 60.38°, 23.13° · geomagnetic 58.2° · needs Kp 5

Tonight's aurora forecast for Salo

39%

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

Tonight Tue 08 Sep
39%
18
20
22
00
02
04
06

Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Salo

Salo is located at 58.2° geomagnetic latitude. Auroras are typically visible when the planetary Kp index reaches 5 or higher.

With an average of 20.6 viable nights per year, patience may be required for aurora viewing.

The historical record for aurora observations in this region spans from April 2, 2016, to March 30, 2026.

The best months for aurora viewing in Salo are September, March, and October.

During May, June, July, and August, there is no full darkness, which can impact aurora visibility.

Salo experiences a Bortle 5 sky, indicating moderate light pollution.

Areas with darker skies, such as Bortle 4, can be found approximately 43 km south near Raseborg.

Closer to Salo, Bortle 5 conditions are present about 14 km north-northeast.

Liukkaankallionahde, a hill located 3.0 km east of Salo, offers a potential viewpoint.

Palomäki, a hill situated 3.1 km north-northeast of Salo, is another nearby elevated area.

The Raivisto reserve is located 4.6 km northwest of Salo. Orkolammi lake and Lehunummi moor are situated about 9.5 km northwest and north of Salo, respectively.

Between January 1, 2015, and December 31, 2016, there were 41 verified aurora reports within 300 km of Salo.

The period from April 2, 2016, to March 30, 2026, has recorded several nights with significant geomagnetic activity.

Notable qualifying nights include March 24, 2026 (Kp 5.0), March 23, 2026 (Kp 5.0), March 22, 2026 (Kp 6.67), March 21, 2026 (Kp 6.0), and March 20, 2026 (Kp 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 Salo forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

Get aurora alerts on iPhone

Nearby towns

Forecasts for places within reach of Salo.