Aurora Borealis in Horwich
United Kingdom · 53.60°, -2.55° · geomagnetic 55.8° · needs Kp 7
Tonight's aurora forecast for Horwich
10%
Peak chance of a visible display tonight, from the same model the Revon app runs. Horwich needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.9. 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 Horwich
Horwich is located at 55.8° geomagnetic latitude. Auroras are typically visible at this latitude during intense geomagnetic storms, often requiring a Kp index of 7 or higher.
On average, there are about 2.7 nights per year in this region where auroral activity is strong enough to be potentially visible.
The historical record spans from 2016 to 2026, providing a basis for understanding past occurrences.
The best months for aurora viewing in Horwich are September, August, and November. These months offer a good balance of darkness and potential auroral activity.
During May, June, and July, there is insufficient darkness for aurora viewing due to the extended twilight periods.
Horwich experiences a Bortle 7 sky, indicating significant light pollution. For darker skies, areas like Ribble Valley, approximately 44 km north, offer Bortle 4 conditions.
The horizon to the north-east is marked by Winter Hill (boundary) at 3.8 km, Spitlers Edge at 5.9 km, and The Island at 6.2 km. These are hilly and island terrain features.
Further east-north-east, the horizon includes Bull Hill, a mountain 14.7 km away, and Harcles Hill, a peak at 14.8 km.
To the north-east of Horwich, the terrain includes Winter Hill (boundary), a hill located 3.8 km away. Spitlers Edge, another hill, is situated 5.9 km north-north-east.
The Island, an island feature, is 6.2 km north-north-east of Horwich. Further afield, Bull Hill, classified as a mountain, lies 14.7 km east-north-east.
Harcles Hill, a peak, is located 14.8 km east-north-east of Horwich.
There are 229 verified aurora reports within 300 km of Horwich between January 1, 2015, and December 31, 2016.
The historical record includes several nights with significant geomagnetic activity. Notable qualifying nights within the 2016-2026 span include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (Kp 8.67).
Additional qualifying nights with high Kp values were recorded on 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
Revon watches the Horwich forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
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Forecasts for places within reach of Horwich.