Live aurora forecast

Northern lights in Aalborg tonight

North Jutland, Denmark · 57° magnetic latitude · Kp 4–5 threshold

Aurora visibility · Aalborg
6/9
Good chance tonight

Kp 6 exceeds the visibility threshold for Aalborg. Head out if skies are clear and you have a dark site.

QuietStormExtreme
Threshold
Kp 4–5
Magnetic latitude
~57°N
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 6 Jul, 01:53 UTC

7-day outlook for Aalborg

Today
6 Jul
6
Good chance
Tomorrow
7 Jul
3
Unlikely
Wed
8 Jul
3
Unlikely
Thu
9 Jul
3
Unlikely
Fri
10 Jul
3
Unlikely
Sat
11 Jul
3
Unlikely
Sun
12 Jul
3
Unlikely

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

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What Kp is needed here?

Aalborg sits at a magnetic latitude of approximately 57°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 4–5 before the auroral oval expands far enough south to be visible from here.

At Kp 4–5, visibility is possible from Aalborg but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Plan your viewing

Best dark sky sites near Aalborg

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Jammerbugten coast - Blokhus

Get directions ↗
Bortle Class 3 - Rural sky 45 km from Aalborg - approximately 45 minute drive

Blokhus is a beach resort on the Jammerbugten bay, part of the Thy and Jammerbugt National Park coastline, facing due north and northwest across the open North Sea toward Norway. The beach is wide and flat with access from the town car park; in winter the resort empties almost entirely, leaving the beach without significant light sources in any direction on the north horizon. The sand extends for kilometres in both directions with nothing obstructing the view, and the North Sea horizon points directly toward the Norwegian coast 500 km north. Bortle Class 3 is reached once clear of the car park.

Rebild National Park

Get directions ↗
Bortle Class 3-4 - Rural sky 35 km from Aalborg - approximately 35 minute drive

Rebild Bakker is Denmark's only national park, covering heathland and forest on rolling hills south of Støvring. The open heathland sections give sky views in all directions with the surrounding agricultural land contributing low light pollution, and the forest road network provides access to dark clearings. The park is quiet at night in winter, with Bortle Class 3-4 achieved from the open heath areas away from the car parks. A well-signed site with established access roads.

Lille Vildmose

Get directions ↗
Bortle Class 3 - Rural sky 30 km from Aalborg - approximately 30 minute drive

Lille Vildmose is Denmark's largest raised bog, covering 7,600 hectares east of Aalborg. The bog surface is flat and open with clear sightlines in all directions - no settlements exist within it and the surrounding agricultural land is sparsely populated, giving genuine Bortle Class 3 darkness. Several tracks give foot access from the perimeter car parks into the bog interior, which is home to wild bison and golden eagles. The flat terrain and open sky make it an effective and unusual dark sky position within easy reach of the city.

When to go

Best time to see the northern lights in Aalborg

Aalborg's aurora season runs from late September through to March, when nights are long enough for truly dark skies. The equinox months, September and March, bring a natural boost in geomagnetic activity, making them statistically the best of the season. Summer months bring too much twilight for aurora to be visible at this latitude.

Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Aalborg's latitude.

April through August brings persistent astronomical twilight that washes out aurora completely. Even strong events (Kp 6+) remain invisible during this period because the sky never gets dark enough.

Up to 8 locations

Aalborg

Denmark

Good chance
Kp 6 need Kp 4-5
Checking darkness…
Skagen

Denmark

Good chance
Kp 6 need Kp 3-4
Checking darkness…
Copenhagen

Denmark

Possible
Kp 6 need Kp 5-6
Checking darkness…
The odds

How often does the aurora appear in Aalborg?

Average nights per month the Kp reached Aalborg's threshold of 4+, from 15 years of geomagnetic data (2010–2024).

3.9Jan
4.2Feb
5.2Mar
4.7Apr
0.1May
0Jun
0Jul
3.1Aug
5Sep
4.8Oct
3.9Nov
3.5Dec

Counts the Kp 4+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Make it happen

Plan your trip to Aalborg

Based on 15 years of geomagnetic data (2010–2024)

1st
March
5.2
avg aurora nights
Stay 9+ nights for 80% chance
2nd
September
5.0
avg aurora nights
Stay 9+ nights for 80% chance
3rd
October
4.8
avg aurora nights
Stay 10+ nights for 80% chance

Best window

The February to April window averages 14 aurora nights - the strongest consecutive stretch of the year.

How long to stay

For your best chance in March, plan at least 9 nights.

Questions

Common questions about aurora in Aalborg

What Kp is needed for northern lights in Aalborg?
The Kp index is a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours. Aalborg at 57°N magnetic latitude - the same band as Aberdeen in Scotland - needs Kp 4-5 from dark sites outside the city. From the Jammerbugten coast at Blokhus, Kp 4 events can produce a detectable arc on the northern horizon on clear nights with adequate dark adaptation. From the city itself, light pollution raises the practical threshold to Kp 5-6.
How does Aalborg compare to Copenhagen for aurora?
Aalborg at 57°N magnetic latitude has a meaningfully lower aurora threshold than Copenhagen at 56°N. The one-degree difference in magnetic latitude corresponds to roughly a half-point reduction in Kp threshold. More significantly, the Jutland landscape around Aalborg has substantially lower light pollution than the Copenhagen metropolitan area. The Jammerbugten coast 45 minutes northwest gives a genuinely dark north-facing beach, while Copenhagen's best dark positions face the Øresund - a strait with Swedish city lights on the far shore.
Is Aalborg a good base for aurora watching in Denmark?
Aalborg is Denmark's best-positioned city for aurora after Skagen. The Jammerbugten coast to the northwest and Rebild National Park to the south give accessible dark sky within 45 minutes. The city has an international airport with direct connections to major Danish cities. Skagen, Denmark's aurora benchmark location at 58°N, is 120 km north on the E45 - reachable in under 90 minutes for the most active nights when a longer drive is justified.
How often does aurora appear from Aalborg?
At 57°N magnetic latitude during the current solar maximum, Kp 4-5 conditions occur on average 15-25 nights per year globally. Not all of these align with clear skies over north Jutland, which receives significant Atlantic cloud cover in winter. A realistic estimate for observable aurora events from dark sites near Aalborg is 5-10 events per aurora season in an active solar period. The equinox months of September and March give the best statistical combination of geomagnetic activity and reasonable weather.
What is the north Jutland aurora circuit?
The north Jutland coast from Aalborg to Skagen forms Denmark's best aurora corridor. Driving north from Aalborg on the E45, the landscape opens into low heathland and dune coast with steadily falling light pollution. Lønstrup and Løkken on the northwest coast give dark north-facing cliff positions between Aalborg and Skagen. The Grenen sand spit at Skagen's tip is the high point - the northernmost land in Denmark, facing due north over the Skagerrak. The whole route is 120 km and driveable in one direction in under 90 minutes.
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