Aurora Borealis in Sleaford
United Kingdom · 53.00°, -0.41° · geomagnetic 54.9° · needs Kp 7
Tonight's aurora forecast for Sleaford
3%
Peak chance of a visible display tonight, from the same model the Revon app runs. Sleaford 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 Sleaford
Sleaford is at a geomagnetic latitude of 54.9°, which is favorable for aurora viewing.
Auroras visible at Sleaford require a Kp of 7 or higher. Based on historical data, there are approximately 2.7 nights per year with conditions suitable for viewing.
The best months for aurora viewing in Sleaford are September, August, and November.
During June and July, there is no full darkness, which may impact viewing opportunities.
Sleaford experiences a Bortle 6 sky, indicating moderate light pollution.
Areas with darker skies, such as Bortle 4 near East Lindsey and Bortle 5 near North Kesteven, are located within 52 km and 11 km respectively.
The horizon is relatively clear in several directions, with Normanton Hill to the west and Beacon Hill to the west-north-west offering unobstructed views.
Normanton Hill is a hill located 10.8 km west of Sleaford.
Beacon Hill is a hill situated 26.6 km west-north-west of Sleaford.
Branston Island and Newark Island are also noted features in the vicinity.
Between 2016 and 2026, there were 2.7 nights per year suitable for aurora viewing in Sleaford.
Historical records show verified sightings in the region, with 101 reports logged between January 1, 2015, and December 31, 2016.
Notable qualifying nights in the historical record include November 11, 2025 (Kp 8.67) and January 19, 2026 (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
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Nearby towns
Forecasts for places within reach of Sleaford.