Finding the best location tonight…
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Tonight best score——
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Aurora score ⓘ
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Kp index—High activity
Cloud cover—Mostly clear
Best time—Local timeAURORA FORECAST & ALERTS
Will I see theNorthernLights tonight?
Accurate aurora forecasts, clear weather data and real-time alerts for your location.
See detailed forecast →
Kp index—High activityCloud cover—Mostly clearBest time—Local time
AURORA ALERTS APP
Get notified when the aurora appears
Real-time alerts, detailed forecasts and aurora maps anywhere in the world.
Push notifications
Aurora maps
3-day forecast
Favorite locations
Detailed space weather dataAurora forecasts around the world
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ABOUT THE APP
Aurora Alerts
Aurora Alerts is an app designed to monitor real-time auroral activity and push alert to let you know if there may be aurora borealis (northern lights) visible tonight. Whenever you are home or away, Aurora Alerts will notify you if the possibility of seeing the northern lights exists.
Main features
- ✓Short-term aurora forecast for next hour with weather conditions and moon illumination
- ✓Long-term aurora forecast for the next 3 days with weather conditions
- ✓Show probability to see Northern Lights based on your or custom location
- ✓Current auroral activity based on observed and predicted Kp Indices from U.S. Air Force Weather Agency
- ✓Weather forecast to check visibility conditions before planning to see northern lights
- ✓Solar wind data directly from the NASA satellite: wind speed, Bz, Bt and density
- ✓Unlike many other apps, it uses the local time instead of UTC
Alerts
- ✓When northern lights may be visible at current or custom location at the horizon or overhead
- ✓Kp index reaches chosen value
- ✓Solar wind data reach chosen values
- ✓You can filter out alerts based on current cloud cover or time of the day
FAQ
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.