Real-time traveler weather information is a valuable tool in maintaining and enhancing both traveler safety and mobility. While this information is available, it is generally scattered over numerous web-based (and sometimes non-web-based) sources, meaning travelers must spend significant amounts of time assembling this information before making a trip. Researchers at the Western Transportation Institute have conducted several projects for Caltrans that integrate weather and traveler data from multiple sources and disseminate the information through different website platforms. These previous efforts have focused on providing information to travelers and agency personnel at a route level. Little work has been performed to extend these systems to cover broad regions or multiple states. This project would develop a user-friendly website displaying multi-state Clarus ESS data, along with other information streams as available, such as DOT Intelligent Transportation System (ITS) field elements, CCTV, planned and active closures, incidents, weather sensor readings from non-DOT sources, and National Weather Service forecast information. Building on previous WTI efforts in California, the region covered would be extended to include all of California, Oregon, Washington and Nevada.