Credits & data sources
Flight and airport status
- Federal Aviation Administration (FAA)Public domain (U.S. Government work)
Ground stops, ground delay programs, airport delays and closures (NAS Status), the operations plan, Command Center advisories, EDCTs and NOTAMs.
Weather
- National Weather ServicePublic domain (U.S. Government work)
Weather alerts near airports.
- Aviation Weather Center (aviationweather.gov)Public domain (U.S. Government work)
METARs, TAFs, flight categories, SIGMETs and center weather advisories.
The US radar layer on the map.
Hourly and 3-day airport forecasts.
Credited next to forecasts, as its terms require.
The world precipitation layer on the map.
Credited on the map while the layer is on, as its terms require.
Maps and aircraft
Airport maps: runways, taxiways, aprons, terminals and gates (via the Overpass API).
© OpenStreetMap contributors. Credited on airport maps.
Live aircraft positions on the map and of flights, tracks and ground traffic (the primary source).
Data © adsb.lol contributors, available under the ODbL. Credited on maps that show aircraft.
- adsb.imFree public API, used under its terms
The origin and destination of aircraft around airports on the map (its community-maintained route set).
Live aircraft positions when adsb.lol is unavailable (the backup source), via its API on RapidAPI.
Credited on maps while its positions are shown.
Headline links on ground stop pages (titles, publisher and link only; the articles stay on the publisher's site).
The position of a followed flight out of ADS-B coverage, e.g. over an ocean (Flightradar24 API).
Infrared satellite imagery and world coastlines.
We acknowledge the use of imagery from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS).
- U.S. Census Bureau, via us-atlasPublic domain data; us-atlas is ISC-licensed
US state and national outlines.
Air route traffic control center (ARTCC) boundaries.
Copyright (c) 2026 Vatusa Inc.
Flight data
Flight schedules and status, times, gates, terminals, tail numbers and flight alerts (AeroAPI).
Backup flight data, gates and terminals, aircraft details, flight alerts, and delays and cancellations by airline on ground stop pages.
Airport data
- OurAirportsPublic domain
Airport names, codes, locations and types worldwide.
Airport time zones.
AI
- OpenRouterCommercial API, used under its terms
Runs the language models behind plain-English advisory and NOTAM summaries, weather briefs and Ask GroundStop AI. AI-written text is labelled where it appears.
- Anthropic (Claude)Commercial API, used under its terms
Runs the same AI features on Claude models when it is the selected AI provider.
Open-source software
- Next.js and ReactMIT License
The website.
- Expo and React NativeMIT License
The iOS and Android app.
- MapLibre GL JSBSD 3-Clause License
The website's maps.
- react-native-mapsMIT License
The app's maps, on Apple Maps or Google Maps.
- shadcn/ui, Radix UI and Tailwind CSSMIT License
The website's components and styling.
- LucideISC License
Icons, and the plane in our logo.
- GeistSIL Open Font License 1.1
The website's typeface.
- D3 and TopoJSONISC License
Map projections and shapes.
GroundStop.app is unofficial and not affiliated with the FAA, the National Weather Service or any provider listed here. Information may be delayed or wrong; never use it for flight planning. See our Terms. Spot a missing credit? support@groundstop.app