Aurora Borealis in Gloucester
United Kingdom · 51.87°, -2.24° · geomagnetic 54.1° · needs Kp 7
Tonight's aurora forecast for Gloucester
2%
Peak chance of a visible display tonight, from the same model the Revon app runs. Gloucester 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.
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Updated 2026-09-08 10:36 UTC
Local aurora guide for Gloucester
Gloucester is at 54.1° geomagnetic latitude. Auroras are typically visible at this latitude during intense geomagnetic storms, which correspond to a Kp index of 7 or higher.
On average, there are about 2.7 nights per year in Gloucester where conditions are suitable for aurora viewing. These opportunities are rare and require significant geomagnetic activity.
The best months for aurora viewing in Gloucester are September, August, and November. These months offer a good balance of darkness and potential aurora activity.
During June and July, there is insufficient darkness for aurora viewing due to the extended twilight periods.
Gloucester experiences a Bortle 7 sky, indicating significant light pollution. For darker skies, areas like Herefordshire (Bortle 4) are approximately 67 km north-west, and the Cotswold District (Bortle 5) is about 21 km south-east.
Notable elevated terrain near Gloucester includes Churchdown Hill, 4.7 km to the east, and Chargy Hill, 5.8 km to the north-north-west. Worcestershire Beacon, a mountain, is located 27.4 km to the north-north-west.
Churchdown Hill, located 4.7 km east of Gloucester, offers elevated terrain. Nearby, Churchdown Park Recreation Ground is situated 5.5 km east-north-east.
Chargy Hill is a hill 5.8 km north-north-west of Gloucester. Further north-east, Kemerton lake is found 20.5 km away.
Worcestershire Beacon, a mountain, lies 27.4 km north-north-west of Gloucester.
Between 2016 and 2026, there were approximately 2.7 nights per year suitable for aurora viewing in Gloucester. The record span for this data is from April 2, 2016, to March 30, 2026.
Historical records show verified sightings in the wider region. Specific qualifying nights with high Kp values include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (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)
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