Aurora Borealis

The Aurora Index and forecasts shown here are based on real scientific data — including space weather (Kp index, solar wind, and magnetic field activity) and local visibility factors (clouds and moonlight).

However, aurora visibility also depends on many unpredictable factors — such as sudden solar events, brief magnetic changes, or simple luck with the weather.

The 3-day predictions are not exact forecasts — they're estimated from past patterns and limited available data, so think of them as educated guesses, not guarantees.Even with the best data, the aurora can always surprise you — sometimes quiet skies come alive, and sometimes strong storms stay hidden behind clouds.