Aurora Borealis in South Ruislip
United Kingdom · 51.56°, -0.41° · geomagnetic 53.5° · needs Kp 7
Tonight's aurora forecast for South Ruislip
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. South Ruislip 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 South Ruislip
South Ruislip is located at 53.5° geomagnetic latitude. Auroras visible at this latitude typically require a Kp of 7.
On average, there are about 2.7 nights per year in South Ruislip where conditions might be suitable for viewing an aurora.
These potential viewing nights have been recorded between 2016 and 2026.
The best months for aurora viewing in South Ruislip are September, August, and November.
During June and July, there is no full darkness, which can impact viewing conditions.
South Ruislip experiences significant light pollution, with a Bortle scale rating of 8.
Areas with less light pollution include a Bortle 4 zone 98 km to the east and a Bortle 5 zone near Braintree, 80 km to the north-east.
Local terrain features include hills such as Harrow on the Hill (5.4 km east-north-east) and Sudbury (5.9 km east), and parks like Denham Country Park (5.5 km west-north-west) and The Green, Harefield (7.4 km north-west).
Harrow on the Hill is a hill located 5.4 km east-north-east of South Ruislip.
Denham Country Park is a park situated 5.5 km west-north-west of South Ruislip.
Sudbury is a hill 5.9 km east of South Ruislip, while The Green, Harefield is a park 7.4 km north-west.
There have been 57 verified aurora reports within 300 km of South Ruislip between 2015 and 2016.
The period between 2016 and 2026 has recorded several nights with potential for aurora viewing, including Kp 7.0 on March 20, 2026, and Kp 7.67 on January 20, 2026.
Other notable nights include Kp 8.67 on January 19, 2026, Kp 7.33 on November 12, 2025, and Kp 8.67 on November 11, 2025.
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 South Ruislip 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 South Ruislip.