tl;dr: Google's WeatherNext 3 is a global AI weather model that generates hourly forecasts directly from raw satellite imagery, predicting surface variables like temperature and humidity at 5km resolution and wind at 10km. It targets both consumer products (Search, Maps, Gemini) and industry applications such as renewable energy operators needing radiation and cloud cover data. Google claims it helped the National Hurricane Center improve predictions for Hurricane Melissa's landfall in Jamaica.