1. Home
  2. Tools
  3. Light & sky
  4. Aurora Forecast Checker

Aurora Forecast Checker

Light & sky · free · runs in your browser

The aurora's reach depends on geomagnetic activity (the Kp index) and your geomagnetic latitude. This checker pulls NOAA's 3-day Kp forecast and compares every 3-hour slot with the Kp needed at your location.

Green slots mean the aurora could show low on the northern horizon — cameras see it before your eyes do.

How to use the Aurora Forecast Checker

  1. Enter your location.
  2. Check the Kp needed and the forecast slots.
  3. Go somewhere dark with a clear northern horizon when slots turn green.

FAQ

Is a high Kp a guarantee?
No — clouds, moonlight and the solar wind's magnetic orientation (Bz) all matter. Kp is a 3-hour average.
Golden Hour CalculatorMoon Phase CalendarSun & Moon Position MapMoonrise & Moonset CalculatorLight Pollution CheckerSolar Alignment Finder (Manhattanhenge)Daylight Chart (Sunrise & Sunset All Year)Sun Path DiagramMeteor Shower PlannerGolden Hour Countdown

Embed this tool on your site

Free to embed on blogs, club websites and forums — copy the code below. A small credit link is included.