iCaelum

Discover a smarter way to connect with the sky.
iCaelum combines weather forecasts, astronomical insights, real-time celestial tracking, and Sentinel—your personal health and safety monitoring tool—into one intuitive app designed for photographers, sailors, gardeners, travelers, and anyone who relies on the rhythms of the sun, moon, and atmosphere.

Key Features

Profiles
Tailor iCaelum to your needs with predefined profiles. Whether you want to capture golden hour, plan a sailing trip, or follow lunar cycles, the app highlights only the most relevant data for your activity.

Forecasts
Compare conditions from multiple trusted sources, including OpenWeatherMap, Yr, Open-Meteo, FMI, SMHI, and DMI. Get side-by-side predictions for temperature, precipitation, cloud cover, and visibility to make informed outdoor decisions.

Sentinel
Stay safe outdoors with real-time environmental monitoring. Sentinel tracks weather conditions, air quality, UV radiation, pollen levels, and natural disaster alerts—delivering safety indexes, live threshold notifications, and color-coded risk levels so you always know when to take action.

Trackers
Follow the live position of the sun and moon with real-time updates. Receive notifications for sunrise, sunset, moonrise, moonset, and twilight phases, and track how light and shadows evolve throughout the day.

Celestial Data
Access detailed almanacs with historical and future information on sun and moon phases, rise and set times, twilight periods, and seasonal variations. Generate reports for any date and location to plan long-term projects or explore celestial patterns.

Shadows
Calculate and visualize shadow lengths and directions for any object or location. A powerful tool for architects, urban planners, and designers who need to understand light and shade across seasons.

Winds
Explore global wind patterns with live flow maps. View speeds, directions, gusts, and upper-level streams in real time—an essential feature for aviation, sailing, and outdoor sports.

Rain Radar
Track approaching storms and precipitation with live rain radar reports from external providers, giving you real-time visual maps to anticipate sudden weather changes and plan with confidence.