AuroraCast: Northern Lights
Aurora forecast with a hunt planner, dark spot finder and observation journal
About this app
Know when it is worth going outside.
AuroraCast combines space weather with the things that actually decide whether you will see the lights: darkness, moonlight and your latitude.
TONIGHT
• A single chance score from 0 to 100 with a plain-language explanation
• Live Kp index, solar wind speed and the Bz field with what it means
• Three-day forecast and a 24-hour Kp history chart
• Aurora oval map with your position marked
HUNT PLANNER
See the best hours tonight by combining aurora activity, astronomical darkness and moon phase. Dark Spot Finder stores your own viewing locations with notes on the northern horizon and light interference, then ranks them for tonight.
MORE
• Alerts when the Kp index passes your threshold — only sent when it is actually dark where you are
• Aurora Journal: every hunt logged with location, conditions, success and photos
• Red night mode that protects your night vision, with all ads disabled
• Original guide to photographing the aurora
• Home screen widget with tonight's score
Space weather forecasts are probabilistic and cloud cover is not predicted here.