Aurora Borealis in Croydon
United Kingdom · 51.38°, -0.10° · geomagnetic 53.3° · needs Kp 7
Tonight's aurora forecast for Croydon
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Croydon 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 Croydon
The aurora forecast for Croydon requires a Kp of 7 or higher. This is a strong geomagnetic storm level.
Croydon is at a geomagnetic latitude of 53.3 degrees. This latitude is relatively low for aurora viewing.
On average, there are 2.7 nights per year with conditions suitable for aurora viewing in Croydon. The record span for these observations is from 2016-04-02 to 2026-03-30.
The best months for aurora viewing in Croydon are September, August, and November. These months offer a good balance of darkness and potential aurora activity.
During June and July, there is no full darkness in Croydon. This significantly reduces the chances of seeing the aurora, even if activity is high.
Croydon experiences a Bortle 8 sky, indicating significant light pollution. This can make aurora viewing challenging.
Darker skies, Bortle 4, can be found approximately 77 km to the east. Bortle 5 skies are available around 71 km to the south, near Brighton.
Notable features that may affect the horizon include Crystal Palace (hill, 3.3 km north-north-east), Cranmer Green (park, 4.7 km west-north-west), Cator Park (park, 5.0 km north-east), Sydenham Hill (hill, 5.8 km north-north-east), and Boating Lake (lake, 11.1 km north-north-west).
Crystal Palace, a hill located 3.3 km north-north-east of Croydon, may offer elevated viewing.
Cranmer Green, a park 4.7 km west-north-west of Croydon, provides open space.
Cator Park is a park situated 5.0 km north-east of Croydon. Sydenham Hill, a hill 5.8 km north-north-east, and Boating Lake, a lake 11.1 km north-north-west, are also nearby features.
There have been 47 verified aurora sightings reported within 300 km of Croydon between January 1, 2015, and December 31, 2016.
The historical data indicates that nights with Kp values of 7.0 or higher occurred on March 20, 2026, January 20, 2026, January 19, 2026, November 12, 2025, and November 11, 2025.
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 Croydon 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 Croydon.