aurora visibility now
Unlikely
Wait for darkness
Kp now 5.3 need 1+
Clouds 63% Cloudy
Sky Daylight visibility
Tonight in Tromsø: Aurora is unlikely in Tromsø right now. The sky is not dark enough yet. AuroraMe watches Kp, clouds and darkness for this location and sends a free alert when a better viewing window opens.
Get notified when Tromsø turns visible Free alerts for Kp spikes, clear skies and darkness windows.
Why this forecast?
Aurora Zone
Higher Aurora Zone = better aurora visibility. Your location's Aurora Zone determines how often auroras appear overhead.
Status Levels:
PerfectAbove 62.0° - Excellent aurora visibility (daily activity)
Good56.0° - 62.0° - Good aurora visibility (regular storms)
Acceptable50.0° - 56.0° - Fair aurora visibility (strong storms only)
LowBelow 50.0° - Poor aurora visibility (extreme storms)
Aurora Zone
Perfect 67.4°
Kp index
Kp measures global magnetic disturbance. Higher Kp = stronger auroras visible at lower latitudes.
Status Levels:
StormKp 6-9 - Geomagnetic storm, strong auroras
GoodKp 3-6 - Moderate activity, good conditions
LowKp 1-3 - Low activity, weak auroras
Very QuietKp 0-1 - Very quiet, minimal auroras
Kp index
Good 5.3
Cloud Cover Impact
Clear skies are essential for aurora viewing. Clouds block your view of the northern lights. The percentage shows cloud coverage (0-25% = clear, 85%+ = overcast).
Status Levels:
ClearClear (0-25%) - Perfect for aurora viewing
Partly CloudyPartly Cloudy (26-50%) - May partially block view
CloudyCloudy (51-85%) - Significantly blocks aurora
OvercastOvercast (85%+) - Blocks aurora completely
Cloud Cover Impact
☁️ Cloudy
Moonlight
Bright moonlight can wash out faint auroras. New moon provides the darkest skies for optimal viewing.
Status Levels:
New MoonDarkest skies - Best for faint auroras
CrescentDim moonlight - Good for viewing
QuarterModerate moonlight - May wash out weak auroras
GibbousBright moonlight - Reduces aurora visibility
Full MoonVery bright - Only strong auroras visible
Moonlight
🌒 Crescent 6%
Darkness
Darker skies are essential for aurora viewing. The sun must be below the horizon for auroras to be visible.
Status Levels:
NightDarkest conditions - Optimal for auroras
Astronomical TwilightDark enough - Good aurora viewing
Nautical TwilightGetting darker - Weak auroras may appear
DaylightSun is above horizon - No aurora visible
Darkness
Daylight
Forecast
Scan the next hours here. The free app watches the longer window and sends alerts when conditions improve.
Time
Kp
Visibility
15.05, Today
23:00
5.7
Unlikely
16.05, Tomorrow
00:00
5.7
Unlikely
01:00
5.7
Unlikely
02:00
4.3
Unlikely
03:00
4.3
Unlikely
04:00
4.3
Unlikely
05:00
3.7
Unlikely
08:00
3.7
Unlikely
11:00
3.7
Unlikely
14:00
3.3
Unlikely
17:00
3.3
Unlikely
20:00
3.0
Unlikely
23:00
4.7
Unlikely
17.05, Sunday
02:00
3.0
Unlikely
05:00
4.7
Unlikely
08:00
3.3
Unlikely
11:00
3.0
Unlikely
14:00
3.0
Unlikely
17:00
3.7
Unlikely
20:00
3.3
Unlikely
23:00
2.7
Unlikely
18.05, Monday
02:00
3.3
Unlikely
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Aurora Borealis Viewing in Tromsø
Tromsø sits at 67.4° magnetic latitude, which means aurora typically becomes visible when the Kp index reaches 1+. At this high magnetic latitude, Tromsø is within the auroral zone — northern lights are a regular occurrence during dark, clear nights from September through March.
Cloud cover is the most common reason people miss aurora even during strong storms. AuroraMe combines the Kp index with real-time cloud forecasts, moon phase, and darkness data to give you a single visibility status — so you know whether it's worth going outside tonight.
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Planning a trip? See the best months for Tromsø → • Northern lights tonight — all cities →
Learn More About the Northern Lights
Northern Lights in Tromsø: Quick Guide
Minimum Kp Needed
3.0+
Viewing Frequency
frequent
Current Kp Index
5.3
How often can you see northern lights in Tromsø?
Based on its magnetic latitude of <strong>67.4°</strong>, aurora viewing in Tromsø is <strong>frequent (100+ nights during solar maximum)</strong>. We are currently near solar maximum (2024-2025), so expect higher-than-average activity.
Best viewing season: September to March, with peak activity during equinoxes (September and March).
What Kp index do I need to see aurora in Tromsø?
For Tromsø, you need a minimum Kp index of <strong>3.0</strong> for aurora to be visible. This threshold is calculated based on the city's magnetic latitude (67.4°).
Higher Kp values produce brighter, more active displays:
- Kp 3.0-4.0: Faint aurora visible in dark skies
- Kp 4.0-5.0: Moderate aurora with dancing patterns
- Kp 5.0+: Strong, colorful displays visible even with some light pollution
Current Kp index: 5.3
Where should I look for aurora in Tromsø?
Aurora often appears directly overhead or across the entire sky during active periods. Best viewing in all directions.
For best results, seek locations with minimal light pollution and unobstructed views of the sky. At Tromsø's high latitude, aurora can fill the entire sky during strong activity.
Can I see northern lights tonight in Tromsø?
Unlikely: Aurora unlikely tonight with Kp 5.3 (below 3.0 threshold for Tromsø). Enable alerts to catch future opportunities.
Real-time conditions: 63.3% cloud cover, aurora probability 0%. Check the live forecast above for the latest updates.
Traveling? Track multiple locations easily
Compare aurora chances across cities and get alerts for all your planned destinations.
For brighter shows consider Fairbanks , Yellowknife