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Northern Lights Forecast for Madison, WI Tonight

Follow Madison’s northern lights forecast tonight, with Lake Mendota viewing advice, local cloud checks, and tips for finding a darker northern skyline.

Unlikely tonight

This is probably not a night to travel

The forecast does not currently show enough aurora activity for this location. Check again later or compare places farther north.

Tonight in Madison: None chance

Practical viewing window: 7:29 PM–6:16 AM local time

Darkness guide

Is twilight good or bad for aurora?

Darker is better. A darker sky creates more contrast, making faint colors and movement easier to see.

Full darkness

Best visibilityYour forecast

Sun below −18°

The sky offers its best contrast. Fainter aurora has a better chance of standing out.

Astronomical twilight

Good, with limits

Sun between −18° and −12°

The sky is not completely dark, but a moderate or bright display can still be clearly visible.

Nautical twilight

Difficult

Sun between −12° and −6°

Twilight still brightens the sky. Usually only vivid aurora will be easy to see with your eyes.

Bright summer sky

Poor visibility

Sun stays above −6°

The sky is too bright for routine viewing. An exceptional display may still appear, but it is not something to plan around.

Practical takeaway: aurora activity and darkness are separate. A strong forecast during twilight means aurora may be active, but the bright sky can make it harder to see.
Now
None
Typical activity
Kp 7+
Approximate oval reach
Where to look
Low toward the northern horizon
Weather
Sky outlook unavailable
Aurora activity, darkness, and cloud cover are evaluated separately. The forecast uses the local observing night, including nights that cross UTC dates. Aurora forecast data refreshes every ten minutes. See how the forecast works.

Night-by-night forecast for Madison

Tonight

Sep 20

None
Peak Kp 2.0

Tomorrow

Sep 21

None
Peak Kp 1.7

Tuesday

Sep 22

None
Peak Kp 1.7

Early outlook — more hours will be added

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Local viewing guide

Aurora inMadison

Latitude
43.1° N
Location
Wisconsin, United States

Madison can experience northern lights during active geomagnetic periods. Wisconsin’s latitude gives it opportunities when the auroral oval expands, but city glow and cloud can still hide a faint display. The forecast here is centered on Madison.

Using Madison’s lakes thoughtfully

An open lake horizon can help, provided you are looking north and have avoided nearby lighting. From suitable public areas on the southern side of Lake Mendota, the water can open up that direction. Conditions differ around the shoreline, so check the view, access hours, and nearby lamps before choosing a spot.

Stay on land; lake ice is not a requirement for aurora watching. Autumn and winter offer long nights, while summer can still produce sightings in the shorter dark window. An open rural location may improve contrast, but it cannot overcome thick cloud. Compare Milwaukee and Minneapolis when assessing the broader regional outlook.

How to use tonight's forecast in Madison

The current aurora chance for Madison is None. Use the local viewing guide above for Madison-specific context, then combine the live rating with darkness and weather.

What the current chance means

A none or near-none chance in Madison usually means tonight is not a strong aurora setup for this location. It is still useful context, because you can compare later updates or look at cities farther north for better odds.

Learn

Aurora guides for nights like Madison

Read these guides when the Madison forecast looks interesting but you still need help judging darkness, season, or viewing conditions.

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