Aurora Borealis in Windsor
United Kingdom · 51.48°, -0.60° · geomagnetic 53.4° · needs Kp 7
Tonight's aurora forecast for Windsor
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Windsor 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 10:35 UTC
Local aurora guide for Windsor
Auroras are typically visible when the planetary Kp index reaches 7 or higher. At Windsor's geomagnetic latitude of 53.4°, such events are infrequent.
On average, there are approximately 2.7 nights per year suitable for aurora viewing in this region. Patience and persistence are key for observers.
The best months for aurora viewing in Windsor are September, August, and November. These months offer a good balance of darkness and potential aurora activity.
During June and July, the region experiences no full darkness due to the summer solstice, making aurora sightings impossible.
Windsor is classified as Bortle 8, indicating significant light pollution. Darker skies, rated Bortle 4, are located 111 km to the east.
Areas with Bortle 5 conditions are found approximately 70 km south-west, near Winchester.
Local terrain features include Windsor Racecourse Island to the west, Eton Dorney lake to the west-north-west, and Queen's Eyot island further west-north-west.
Geographic features near Windsor include Windsor Racecourse Island, located 3.3 km to the west.
Further west-north-west are Eton Dorney lake at 4.6 km and Queen's Eyot island at 5.7 km.
To the north-east lies Denham Country Park, 12.8 km away, and to the north-west is Mount Hill, also 12.8 km distant.
Between 2015 and 2016, 56 verified aurora reports were recorded within a 300 km radius of Windsor.
The historical record indicates viable aurora nights occurred on March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (Kp 8.67).
Additional qualifying nights include November 12, 2025 (Kp 7.33) and November 11, 2025 (Kp 8.67).
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 Windsor 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 Windsor.