Weather built for the water.

windr is a wind forecast app built specifically for sailors. It pulls official forecast data from official US government forecast data and presents it the way sailors think about weather: wind speed in knots, direction on a real compass rose, and gust data front and center.

Most weather apps are designed for people deciding whether to bring an umbrella. They show temperature in giant numbers, bury wind data three taps deep, and display speed in mph — a unit no sailor uses. windr inverts those priorities. Wind is the headline. Everything else is secondary.

windr is a Progressive Web App — no App Store required. Visit windrweather.com in Safari on iOS, tap "Add to Home Screen," and it installs as a full-screen app that works like a native application. Same on Android via Chrome.

windr sources all forecast data from the official US government weather API. This is the same underlying data that professional marine forecasters use — not a third-party model or a data reseller. When you load a forecast in windr, your coordinates are sent directly to the forecast service.

The forecast system covers the entire contiguous United States. Forecasts are updated as new model runs complete — typically every few hours. windr displays:

• Current conditions: wind speed (kts), direction, condition, temperature
• Gust speed when forecast gusts exceed 3 knots above sustained
• 24-hour hourly wind timeline with direction arrows
• 7-day forecast grid covering day and overnight periods
• Wind strength classification: Calm / Light / Moderate / Fresh / Gale

windr's UI is inspired by nautical instruments. The design is warm off-white — like chart paper — with deep navy typography. The primary view is a compass rose with a live needle pointing to the wind's origin. The speed is shown in large numerals in a color that maps to strength: cyan for calm, green for light, amber for moderate, orange for fresh, red for gale.

The 24-hour wind timeline is a sparkline-style view that shows hourly conditions at a glance, useful for planning race start windows or deciding when to head out. The 7-day grid shows named forecast periods (Tonight, Tomorrow, Tomorrow Night) with the key numbers for each.

The app remembers your last location between sessions using localStorage — no account, no server-side storage. Load it on the dock before you cast off and it restores where you left it.

windr was built by AJ Sorensen, a competitive sailor based at Milford Yacht Club on Long Island Sound, Connecticut. AJ races dinghy and keelboat on the Sound and built windr to scratch a personal itch: every weather app he tried was designed for someone else.

AJ operates Sorensen on Sound LLC, a small software and product company based in Milford, CT. Other projects include NavTactiq (iOS sailing compass and race timer), Drift (iOS tidal current app), and sailing-store.com (ILCA sailing gear).

windr is built with Astro (static site generation), React (interactive forecast UI), and deployed to Cloudflare Pages. It has no backend — just a static PWA that talks directly to the forecast API.