Two alert systems. One for golden hour. One for the Milky Way.
Get an email 2 hours before an exceptional sunset, or the night before a great sunrise.
Get notified about 1 hour before astronomical dark when Milky Way conditions cross your threshold.
Most weather apps tell you temperature and rain chance. Neither is useful if you're trying to decide whether to pack your camera. LightCast alerts are built around the variables that actually determine sky quality: cloud structure, moon phase, light angle, atmospheric clarity, and Bortle class for dark sky work.
You set a minimum score. We watch conditions for your city every hour. When the forecast crosses your threshold with enough lead time to act, you get one email. When it doesn't, you hear nothing — silence is information too.
Alerts arrive 2 hours before sunset or the night before sunrise. Scored on cloud type, humidity, horizon clearing, and light angle.
Alerts arrive ~1 hour before astronomical dark. Scored on cloud cover, moon illumination, Bortle class, and dew point spread.
Both systems support any location globally. Set multiple cities if you shoot in different spots.
No account, no app, no paywall. Powered by Open-Meteo weather data. Unsubscribe any time from any email.
LightCast is a free suite of sky forecasting tools: Goldcast for golden hour, Starcast for astrophotography, Dronecast for drone flight windows, and Tricast for camera settings. The alert systems are extensions of those tools — automated versions of the manual check you'd do anyway, sent to your inbox so you never have to remember.