Aurora Borealis in Hertford
United Kingdom · 51.80°, -0.08° · geomagnetic 53.7° · needs Kp 7
Tonight's aurora forecast for Hertford
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Hertford 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 Hertford
Hertford is located at 53.7° geomagnetic latitude. Auroras are typically visible at this latitude when the Kp index reaches 7.
On average, there are about 2.7 nights per year in Hertford where conditions are suitable for aurora viewing.
Historical data from 2016 to 2026 indicates the range of Kp values observed.
The best months for aurora viewing in Hertford are September, August, and November.
During June and July, there is no full darkness, which can impact viewing conditions.
Hertford experiences a Bortle 7 light pollution level.
Areas with darker skies, such as Bortle 4, are located 81 km east-south-east, and Bortle 5 skies are near Braintree, 46 km east-north-east.
Local terrain features include Broad Water Island (island, 4.1 km west), Burnham Green (hill, 7.4 km north-west), Therfield Hill (hill, 24.7 km north), Recreation Ground (park, 30.0 km north-west), and Sharpenhoe Clappers (park, 31.4 km north-west).
Geographic features near Hertford include Broad Water Island, an island located 4.1 km to the west.
To the north-west, Burnham Green is a hill situated 7.4 km away.
Further north, Therfield Hill is a prominent hill at 24.7 km. Sharpenhoe Clappers and Recreation Ground are parks located 31.4 km and 30.0 km north-west, respectively.
There have been 58 verified aurora reports within 300 km of Hertford between January 1, 2015, and December 31, 2016.
The period from 2016 to 2026 includes several nights with significant geomagnetic activity.
Notable qualifying nights include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), 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 Hertford 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 Hertford.