Aurora Borealis in Östermalm
Sweden · 59.34°, 18.08° · geomagnetic 58.0° · needs Kp 7
Tonight's aurora forecast for Östermalm
40%
Peak chance of a visible display tonight, from the same model the Revon app runs. Östermalm 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.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:36 UTC
Local aurora guide for Östermalm
The aurora forecast uses a Kp 7 threshold. This location is at 58.0° geomagnetic latitude.
On average, there are 2.4 nights per year with conditions suitable for viewing.
The record span for these observations is from 2016-04-02 to 2026-03-30.
The best months for aurora viewing are September, November, and March.
During May, June, July, and August, there is no full darkness.
This area has a Bortle 8 rating, indicating significant light pollution.
Dark sky areas with Bortle 4 are located 39 km east-south-east near Värmdö kommun.
Bortle 5 conditions are found 30 km north-east near Österåkers kommun.
Loudden is a headland located 3.0 km east-north-east of Östermalm.
Lappkärret, a lake, is situated 3.5 km north-north-west of Östermalm.
Karlbergs Slottspark, a park, is 3.6 km west of Östermalm.
There have been 30 verified aurora reports within 300 km between 2015 and 2016.
Notable qualifying nights include 2026-03-20 (Kp 7.0), 2026-01-20 (Kp 7.67), and 2026-01-19 (Kp 8.67).
Additional qualifying nights occurred on 2025-11-12 (Kp 7.33) and 2025-11-11 (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
Revon watches the Östermalm 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 Östermalm.