Aurora Borealis in Marshfield
United States · 44.67°, -90.17° · geomagnetic 53.5° · needs Kp 7
Tonight's aurora forecast for Marshfield
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Marshfield needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.7. 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 Marshfield
Marshfield is located at 53.5° geomagnetic latitude. Auroras are typically visible here when the planetary geomagnetic activity reaches Kp 7.
On average, there are about 3.2 nights per year when conditions are suitable for aurora viewing in Marshfield. This is based on historical data spanning from 2016 to 2026.
The best months for aurora viewing in Marshfield are May, August, and September. These months offer a good overlap between the darkest skies and the historical periods when auroras have been observed.
Marshfield experiences a Bortle 5 sky, indicating moderate light pollution. Areas with darker skies, such as Bortle 4, can be found 37 km north near the Town of Holton.
Further dark sky opportunities exist 11 km north-west near the Town of Spencer, also rated Bortle 5.
Notable features around Marshfield include McMillan Marsh State Public Hunting Grounds to the north-north-west, Beth Arthur Lane Pond Number 3 to the east, and South Rice Lake to the east-north-east.
McMillan Marsh State Public Hunting Grounds is located 7.2 km north-north-west of Marshfield.
To the east of Marshfield, Beth Arthur Lane Pond Number 3 is situated 15.9 km away, and South Rice Lake is 19.4 km east-north-east.
Big Rapids County Park is situated 19.7 km north-north-east of Marshfield, and Smoky Hill is 20.3 km east-north-east.
There have been 149 verified aurora reports within 300 km of Marshfield between January 2015 and December 2016.
Notable qualifying nights with high geomagnetic activity include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (Kp 8.67).
Additional qualifying nights occurred on November 12, 2025 (Kp 7.33) and November 11, 2025 (Kp 8.67).
Sources: Revon analysis of NOAA planetary Kp · Revon location dataset · 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 Marshfield 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 Marshfield.