Aurora
CSENQuiet — no aurora chance
Czechia sits far from the Arctic Circle, so an aurora is only visible here during a strong geomagnetic storm. This page reads the live Kp index from NOAA and turns it into a realistic chance from Czech skies.
Best conditions: a clear, dark, moonless sky with a view to the north, as far from city lights as possible. Storms often peak overnight — watch the Kp forecast for the next two nights.
FAQ
Will the aurora be visible from Czechia tonight?
It depends on the Kp index. From the Czech basin an aurora is only realistic during a geomagnetic storm — a faint glow low on the northern horizon can appear from around Kp 6, while bright displays need Kp 8–9. The current value and forecast are at the top of this page.
What is the Kp index?
Kp is a planetary index of geomagnetic activity on a 0–9 scale. It measures how disturbed Earth’s magnetic field is by the solar wind. The higher the Kp, the further south — and thus over Czechia — the aurora reaches.
Where and when should I look?
Always toward the northern horizon, after dark under a clear sky. Darkness is key — away from city lights and a bright moon. Storm peaks often come at night; watch the Kp forecast for the next two nights.