Made under the northern lights

Yes. The live map, the forecasts, the long-term forecast and the widgets are free, and you don't need an account.

Space weather forecasts from the NOAA Space Weather Prediction Center, including its OVATION aurora model, and weather and cloud forecasts from MET Norway.

The forecasts are most reliable for the next three days. Further ahead, they're a rough guide.

The Kp index is one number for the whole planet, so it's the same in Tromsø as in London. It can't tell you whether you'll see the aurora where you are, so Aurora Status gives you a score for your own location instead.

Not yet. Apps for iPhone and Android are in development, and you can join the waitlist to hear when they're out.

Until then, you can add Aurora Status to your phone's home screen, and it opens like an app. On iPhone, open the site in Safari, tap Share and choose Add to Home Screen (Apple's guide). On Android, open the menu in Chrome and add it to your home screen (Google's guide).