Is the aurora visible tonight where you are?
Pick a location and get a plain-English verdict -- excellent, good, possible, or unlikely -- with every reason behind it. Nothing here is sent to a server: your coordinates stay in this browser and the verdict is computed entirely on your device. Seethe privacy page for details.
Current location
None set
This reads your device's GPS/network location once, in your browser. It is never sent to any server -- the coordinates are stored only in this browser (localStorage) and the verdict below is computed entirely on your device.
Enter coordinates manually
Set your location above to see tonight's personal verdict.
Tonight's verdict
Things this doesn't account for
Live data isn't available right now. Try again in a moment, or checkthe Kp index directly.
How this verdict is computed
The verdict combines your geomagnetic latitude, the Kp index needed to bring the aurora overhead (or just to your horizon) at that latitude, NOAA's live OVATION aurora oval model where available, whether it is currently astronomically dark at your location, and the moon phase. It does not account for cloud cover -- always check your local weather forecast separately. Full methodology and data sources are on thedata sources page.