Minnesota, United StatesMagnetic latitude 55.9°Population 86,110214 m above sea level
Northern lights in Duluth
Duluth needs an active night: from about Kp 3.7 the aurora appears low over the north horizon, and it rises higher as activity grows. Since 1995 that level (Kp 4.7) was reached during darkness here on 932 nights.
Right now
It is still light here. Darkness starts at 19:25.
Updates every minute while this page is open.
Tonight in one minute
Not tonight
- Solar activity Too weak: Kp 1.7 expected, 3.7 needed here.
- Sky Mostly clear (10% cloud).
- Darkness Dark from 19:25 to 06:23.
What to do: Not tonight — your next chance is shown just below.
- Detailed forecast Fri 16 1.7 No · Kp 1.7
- Sat 17 1.7 No · Kp 1.7
- 27-day trend Sun 18 2 Photos only · Kp 2
- Mon 19 2 Photos only · Kp 2
- Tue 20 3 Photos only · Kp 3
- Wed 21 4 Good chance · Kp 4
- Thu 22 4 Possible · Kp 4
- Fri 23 3 Unlikely · Kp 3
- Sat 24 2 Unlikely · Kp 2
- Sun 25 2 Photos only · Kp 2
- Mon 26 2 Photos only · Kp 2
- Tue 27 2 Photos only · Kp 2
- Wed 28 2 Photos only · Kp 2
- Thu 29 2 Photos only · Kp 2
- Fri 30 5 Good chance · Kp 5
- Sat 31 5 Good chance · Kp 5
- Sun 1 3 Photos only · Kp 3
- Mon 2 3 Photos only · Kp 3
- Tue 3 2 Photos only · Kp 2
- Wed 4 2 Photos only · Kp 2
- Thu 5 3 Photos only · Kp 3
- Fri 6 3 Photos only · Kp 3
- Sat 7 3 Photos only · Kp 3
Thursday 22 October — Good chance · Kp 4 · best around 00:00 · Forecast cloud: 47%. · Reliability: low (rough trend)
Each box is one night: the colour shows the chance, the number the expected Kp. Tap a night for details.
📅 Add these nights to your calendar — it updates itself (.ics)
How far ahead can the northern lights be forecast?
- Minutes to an hour: satellites 1.5 million km away measure the solar wind before it reaches Earth. This is the surest warning — the “Right now” box uses it.
- 1–3 days: when the Sun throws out a cloud of particles, it takes one to three days to arrive. NOAA's 3-hourly forecast covers these nights; the timing can still be off by a few hours.
- 4–27 days: the Sun turns once every 27 days, and regions that disturbed Earth's field last time often do it again. NOAA's 27-day outlook gives this rough trend — new eruptions are not in it yet.
Tonight
Updated 09:31 local time
Unlikely
Best around 19:00. Forecast max Kp 1.7 (this place needs 3.7), average cloud 10%.
- Dark enough
- 19:25 – 06:23
- Sunset
- 18:19 · sunrise 07:29
- Moon
- 31% · ↑ 13:56 · ↓ 21:42
- Kp neededKp index: a 0–9 measure of geomagnetic activity. The higher it is, the further from the poles the aurora reaches.
- Kp 3.7 (Kp 3.3 with an open horizon)
- Kp for photos
- In photos: from Kp 2 (a red glow low in the north).
- Look towards
- north (2°)
Score = activity (NOAA Kp and OVATION) × clear sky (MET Norway) × darkness × moonlight. Methodology
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What you would see from Duluth
Facing north. Bands show where the aurora sits at two activity levels.
| Kp | What you see | Lower edge | Ray tops | Distance to the aurora |
|---|---|---|---|---|
| 2 | Faint glow, mostly on camera | 5° | 12° | 734 km |
| 3 | Faint glow, mostly on camera | 9° | 19° | 512 km |
| 4 | Visible to the north | 19° | 33° | 289 km |
| 5 | Visible to the north | 57° | 71° | 67 km |
| 6 | Overhead and all around | – | – | – |
| 7 | Overhead, and also to the south | – | – | – |
| 8 | Overhead, and also to the south | – | – | – |
| 9 | Overhead, and also to the south | – | – | – |
The Kp scale in plain words
Kp is a 0–9 score for how strongly the Earth's magnetic field is being shaken by the solar wind. The higher it goes, the further from the poles the northern lights reach. Kp 0–2 is a quiet night; Kp 5 and above is a geomagnetic storm.
- Kp 0–2 Quiet next 24 h camera in Duluth Only under the auroral oval: northern Norway, Swedish and Finnish Lapland, Iceland, Alaska, northern Canada.
- Kp 3 Unsettled Bright in the Arctic; low on the horizon in central Scandinavia and southern Iceland.
- Kp 4 Active eye in Duluth Overhead in the Arctic; low in the north from southern Norway, Sweden, Finland and northern Scotland.
- Kp 5 Minor storm (G1) Scotland, southern Scandinavia, the Baltic states, the northern US states and southern Canada.
- Kp 6 Moderate storm (G2) Northern England, Denmark, northern Germany and Poland, the US Midwest — often clearer in photos than to the eye.
- Kp 7 Strong storm (G3) Most of the UK, the Netherlands, Germany, Poland, Czechia; red glow in photos from France and the northern Alps.
- Kp 8 Severe storm (G4) Central Europe to the eye; red sky in photos from northern Italy, Spain, the Balkans and Turkey's Black Sea coast.
- Kp 9 Extreme storm (G5) Seen across Europe and the US; in photos as far south as the Mediterranean, Turkey and North Africa (May 2024).
Light pollution
Bright suburban sky. Strong sky glow washes out faint aurora. Head out of town for anything but a bright display.
A noticeably darker area starts about 5 km to the east-south-east. Open in OpenStreetMap
Estimate from NASA VIIRS night-light data (sky-glow model within 50 km). Check access and private land before you go.
Hills and mountains
The terrain rises to about 10° above the horizon towards the north. That hides low aurora: here you need about Kp 3.7 instead of Kp 3.3. A hilltop, shore or open field with a clear view to the north helps.
From elevation data (AWS Terrain Tiles) along seven lines of sight up to 30 km.
Best months to see the aurora in Duluth
Share of nights 2005–2025 that were dark, active enough here and mostly clear.
March has been the best month (15% of nights), followed by September (13%).
| Month | Good nights | Clear nights | Darkness | Low / high |
|---|---|---|---|---|
| September | 13% | 55% | 9.1 h | 10° / 20°C |
| October | 10% | 45% | 10.9 h | 3° / 12°C |
| November | 7% | 31% | 12.0 h | -4° / 3°C |
| December | 4% | 33% | 12.9 h | -12° / -5°C |
| January | 8% | 48% | 12.4 h | -16° / -8°C |
| February | 11% | 57% | 11.4 h | -16° / -7°C |
| March | 15% | 55% | 9.9 h | -7° / 1°C |
| April | 5% | 40% | 7.8 h | -1° / 8°C |
Aurora nights in Duluth since 1995
Nights when Kp reached 4.7 or more while it was dark here.
Most recent strong nights
- 4 October 2026 · Kp 5.0
- 3 October 2026 · Kp 5.0
- 7 September 2026 · Kp 5.0
- 3 July 2026 · Kp 7.0
- 24 June 2026 · Kp 5.0
- 18 April 2026 · Kp 5.3
- 17 April 2026 · Kp 5.3
- 2 April 2026 · Kp 5.3
Practical information
- Nearest airport
- Duluth International Airport (DLH) · 10 km
- Typical low / high in March
- -7° / 1°C
- What to wear
- Below freezing at night: thermal layers, a warm jacket, hat, gloves and winter boots. Full clothing guide
- Emergency number
- 911
- Winter driving
- Tyre and chain rules are set at state level; check Alaska 511 (511.alaska.gov, Alaska DOT&PF) for Alaska roads, or the relevant state's 511 service elsewhere. Road conditions
- Access to land
- There is no general right to roam; trespass law is set by each state, so stay on public land (national parks, national forests, BLM land) or get the landowner's permission, and follow each park's night-time and parking rules.
- Official space-weather service
- NOAA Space Weather Prediction Center (aurora dashboard)
- Weather service
- National Weather Service (NOAA)
Questions and answers
What Kp do you need to see the aurora in Duluth?
Duluth needs an active night: from about Kp 3.7 the aurora appears low over the north horizon, and it rises higher as activity grows.
Which way should I look for the aurora in Duluth?
Face north (about 2° from true north). At Kp 3.7 the lower edge of the aurora sits roughly 19° above the horizon; stronger activity lifts it higher and further across the sky.
What is the best month to see the aurora in Duluth?
Over 2005–2025, March gave the best odds in Duluth (15% of nights dark, active enough and mostly clear), followed by September (13%).
When is the aurora season in Duluth?
Duluth gets dark enough for the aurora all year round, though the long winter nights give the most hours to watch.
Is there much light pollution in Duluth?
Strong sky glow washes out faint aurora. Head out of town for anything but a bright display. A noticeably darker area starts about 5 km to the east-south-east.
When was the aurora last possible in Duluth?
Activity last reached storm level (Kp 5 or more) during darkness in Duluth on 4 October 2026 (Kp 5.0) — 932 such nights since 1995. Here the aurora also appears on many quieter nights.
Also covered by this forecast
Villages and districts around Duluth share its forecast: within a few kilometres the sky, the Kp needed and the best direction are the same.
- City of Duluth 1 km
- Duluth Heights 3 km
- Missabe Junction 3 km
- Hunters Park 6 km
- Lester Park 9 km
- Lakewood 14 km
- Clifton 18 km
- French River 20 km