What's in the sky tonight? beta · live data

The big question

When can I see the northern lights next?

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When can I see the northern lights next?

The northern lights need three things: solar activity (measured by the Kp index), darkness, and a latitude close enough to the auroral oval. From Scandinavia, Iceland, Canada or Alaska, many active nights work. From mid-latitudes you need a proper geomagnetic storm, the kind that happens a handful of times a year in an active solar cycle. Phone cameras see aurora before eyes do: a 3-second exposure at a dark northern horizon is the honest first test.

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