Features
What Altiwind checks for every hour, and how.
Airspace overlays, coming in v1.1
Planned for Altiwind v1.1, informational airspace overlays for the US, Germany, France and Switzerland, always linked to the official sources.
Drone profiles
Pick your drone and Altiwind uses the maker's wind resistance, weight, temperature range and IP rating to judge every forecast hour against its limits.
The go/no-go score
One label per hour, decided by the worst of seven weather checks against your drone's limits, with a reason chip for every check.
Estimated gusts at your flying height
Altiwind estimates gusts at 30–120 m from the forecast 10 m gusts and the wind aloft. How the estimate works, why gusts matter and its limits.
Install Altiwind on your home screen
Add the Altiwind web app to your iPhone or Android home screen in a few taps. No App Store, no account, and your last forecast stays available offline.
Kp index for drone pilots
Kp now and a 3-day forecast from NOAA, weighted by your geomagnetic latitude, with a plain GPS line, normal or may be degraded, instead of alarm.
Sun times, twilight and night
Sunrise, sunset, civil twilight, golden hour and a night flag for your spot, computed on your phone with NOAA's solar algorithm. Light and weather only.
The verified forecast badge
Altiwind compares recent forecasts with the nearest airport's METAR wind and gusts, picks the model doing best in your area and shows how far off it runs.
Wind at altitude
See the forecast wind at 30, 60, 90 and 120 m above ground, worked out from weather-model levels, not just the 10 m number most weather apps show.