Northern lights in Wisconsin are rare: this far south they need a strong geomagnetic storm of Kp 7 or more. Of the 3 locations AuroraMe tracks in Wisconsin, Green Bay has the best chance.
Cities Covered
3
Magnetic Latitude Range
52.4°–53.8° MLAT
Required Kp Index
Kp 7.0–7.0
Unlikely
Best chance in Wisconsin tonight: Green Bay
AuroraMe watches Kp, clouds and darkness windows so you know when to go outside.
Kp Requirements by Location
Green Bay
53.8° MLAT
Kp 7.0+ Horizon
Kp 8.0+ Optimal
Kp 9.0+ Bright
Madison
52.5° MLAT
Kp 7.0+ Horizon
Kp 8.0+ Optimal
Kp 9.0+ Bright
Milwaukee
52.4° MLAT
Kp 7.0+ Horizon
Kp 8.0+ Optimal
Kp 9.0+ Bright
Visible on horizon
Clearly visible
Bright overhead
Aurora Status by City
Best Viewing Season in Wisconsin
Geographic Advantages
Mean astronomical darkness at Green Bay, Dec–Feb 10.2–11.6 hours
Peak Aurora Months
Estimates for Green Bay
October 0.16 clear nights, 61.9% cloud
November 0.12 clear nights, 67.3% cloud
September 0.11 clear nights, 51.3% cloud
Frequently Asked Questions
Can you see the northern lights in Wisconsin?
Yes, Wisconsin offers aurora viewing opportunities. Cities like Green Bay (MLAT 53.8°) can see aurora at Kp 7.0+, while southern locations need Kp 7.0+. Best viewing is September–April during dark, clear nights.
Learn More About the Northern Lights
Use the aurora borealis forecast, check northern lights tonight, or open the live aurora map and Kp tracker.
