KP Index: What Number Do You Actually Need?

Overview

The KP index is a 0–9 scale of geomagnetic activity. The higher it is, the stronger the aurora and the further south it's visible. But how much do you actually need in Rovaniemi?

What KP you need here

At Rovaniemi's latitude (66.5°N), aurora is often visible from KP 1–2, good at KP 3, and spectacular at KP 4+. Travellers further south need much higher numbers.

KP isn't everything

A high KP is useless under cloud, and a modest KP over clear skies can be beautiful. Clear, dark skies matter as much as the number.

Let a guide track it

On tour, your guide combines KP with live cloud data. See our forecast guide.

Frequently Asked Questions

What KP index do you need in Rovaniemi?

Not much — aurora is often visible from KP 1–2, good at KP 3, and spectacular at KP 4+. Rovaniemi's far-north latitude means you don't need the high numbers required further south.

Is a high KP index a guarantee?

No — a high KP means strong potential, but cloud will hide even a powerful aurora. Clear, dark skies are just as important.

Where can I check the KP index?

NOAA's Space Weather Prediction Center and the Finnish Meteorological Institute publish forecasts. On tour, your guide does the tracking for you.

KP Index: What Number Do You Need?

Overview

What KP you need here

KP isn't everything

Let a guide track it

Frequently Asked Questions

Let the Data Work for You