Live Northern Lights forecast for Tromsø, Norway at 69.6°N: current OVATION chance, local Viewing Score, cloud cover, best time and a 3-day outlook.
Strong aurora activity and clear skies. Good conditions for observing the Northern Lights.
Kp index5.1High activity
Cloud cover18%Mostly clear
Best time23:00 – 01:30Local time
Cloud cover18%Mostly clear
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Detailed space weather dataTromsø sits at 69.6°N, close to the high-latitude auroral zone. Geography is favorable during the dark season, while long summer daylight can reduce Viewing Score to zero even when geomagnetic activity is present.
Around Tromsø, coastal weather can change quickly, so short clear-sky windows may matter as much as geomagnetic strength. Check the hourly cloud forecast before heading out.
All times on this page use the local Europe/Oslo time zone. The forecast combines current auroral activity, predicted Kp, darkness, Moon conditions and local weather to estimate practical viewing conditions near Tromsø.
Viewing Score is a local 0–100 estimate rather than an official NOAA probability. The current score starts from the aurora chance for Tromsø; future hours adjust auroral activity using the predicted Kp.
Darkness, cloud cover and Moon illumination then modify the result. Cloud cover only affects the score when the “Include clouds in score” switch is enabled. Daylight can reduce the score to zero, while a bright Moon above the horizon applies a smaller penalty.
