Helder – Weather

Rain by the minute from live radar, plus our own forecast up to 24 hours ahead. Hourly scores for running and cycling. No ads, no account, no tracking. Free.

HELDER — WEATHER, CALMLY DELIVERED

Weather apps shout. Helder doesn't. No loud colors, no ads, no account, no tracking. A classic design that tells you at a glance whether to bring a coat, when the rain passes and when the sun comes back. Made for creatives, athletes and everyone who lives outdoors.

WHAT MAKES HELDER DIFFERENT • Rain by the minute, straight from live radar. If it's raining outside, Helder says so. • A rain graph you can drag through: what time, how much, and how warm. • Radar on the map with playback — NEXRAD coverage across the US and Canada, plus 8-hour, temperature, wind and pressure layers. • Official warnings from the National Weather Service, shown as a clear banner and, if you like, as a notification. • Fully customizable: build your own weather page from 21 blocks to reorder, hide and tune. Hourly, 14 days, wind rose, barometer, pollen, air quality, sun and moon, golden and blue hour, and more. • Sport and outdoors: hourly scores for walking, running, cycling and outdoor sports, with the best moment of the day. • For creatives: Helder tells you when the weather turns special — a golden sunset, a clear starry night, a rainbow. Handy for photographers and stargazers. • Notifications that matter: official warnings, rain alerts in your own time window, and the day in one sentence each morning. All per place, all optional. • Units your way: °F or °C, mph or km/h, inches or millimeters. • Privacy without the fine print: no account, no tracking, your location rounded to about a kilometer before it reaches our server.

Home screen widgets, light and dark, five languages. Completely free — no subscription, no paywall.

Forecast: NOAA HRRR and ECMWF via Open-Meteo. Radar: RainViewer (NEXRAD). Alerts: National Weather Service. Air quality: Copernicus CAMS. In Europe: KNMI, DWD ICON, EUMETSAT and MeteoAlarm.