Your weather app said 20% chance of rain. You got drenched.
This happens because most weather apps forecast for a zip code — an area that might cover dozens of square miles. The rain hit your block. The app was looking at your city.
Rainbow Weather is different. It forecasts for your exact GPS coordinates, updated every 10 minutes, at 1 kilometer resolution. It tells you not just that rain is coming but when — to the minute. "Rain starting in 14 minutes. Lasting 23 minutes. Stopping at 4:47pm." That level of precision.
According to WeatherIndex.ai, Rainbow is currently the most accurate short-term precipitation forecaster on earth. Not most popular. Most accurate. The ranking is based on independent verification of forecast data against actual measured rainfall across thousands of locations worldwide.
The technology is AI-powered nowcasting — a forecasting method that combines real-time data from satellites, weather radars, and ground stations, then runs it through machine learning models trained on massive historical datasets. Traditional weather forecasting runs big atmospheric simulations on supercomputers every few hours. Rainbow runs continuous updates every 10 minutes specifically for precipitation, which is what actually ruins your day.
The app is free. It works on iOS and Android. The live radar map on the website shows you the current precipitation picture anywhere on earth, updating in real time.
You'll never fully trust your old weather app again after using this.
Which is probably fine — your old weather app was wrong about the rain anyway.