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Tonight best score——
—/100
Aurora score ⓘ
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Kp index——
Cloud cover——
Best time—Local timeAURORA FORECAST & ALERTS
Will I see theNorthernLights tonight?
Check hourly aurora chances, cloud cover and the best viewing time for your location. Get notified when conditions improve with Aurora Alerts.
See detailed forecast →
Kp index——Cloud cover——Best time—Local time
Aurora forecasts around the world
View all locations →
NONorway→Live aurora forecast
CACanada→Live aurora forecast
GBUnited Kingdom→Live aurora forecast
AUAustralia→Live aurora forecast
NZNew Zealand→Live aurora forecast
ISIceland→Live aurora forecast
FIFinland→Live aurora forecast
SESweden→Live aurora forecast
USUnited States→Live aurora forecast
USAlaska→Live aurora forecast
RURussia→Live aurora forecast
🌍View all locations→Aurora forecasts around the world
FAQ
Will I see the Northern Lights tonight?
A forecast cannot guarantee a sighting. Compare the local aurora chance and hourly Viewing Score with darkness, cloud cover and the best viewing window. Conditions may change.
What Kp index do I need to see aurora?
There is no universal Kp threshold. Kp describes global geomagnetic activity, while local visibility depends on the auroral oval, geomagnetic latitude, darkness and clouds. Check the location forecast.
Can cloud cover block the aurora?
Yes. Thick cloud can hide aurora even during strong geomagnetic activity. Compare cloud cover by hour, and turn on “Include clouds in score” if you want clouds reflected in Viewing Score.
How can I receive aurora alerts?
Install Aurora Alerts on iOS or Android, choose your location, set notification thresholds and times, and allow notifications on your device. Downloading is free; some alert features may require an in-app purchase.
How is the Viewing Score calculated?
Viewing Score is a local 0–100 estimate, not an official NOAA probability. It starts with the aurora chance for the location; future hours adjust that activity using the predicted Kp.
The score is then reduced by daylight, cloud cover (when “Include clouds in score” is enabled), and bright Moon conditions when the Moon is above the horizon. Clear, dark conditions therefore preserve more of the aurora signal, while daylight or heavy clouds can reduce the score sharply.