ClimaWATCH is an interactive climate data platform developed by Mathematica to support public health planning in the face of rising climate risks. Focused on heat-related hazards, the tool enables users—such as health professionals, policymakers, and researchers—to access localized climate projections and social vulnerability indicators across U.S. counties. With user-friendly visualizations and customizable reports, ClimaWATCH helps identify at-risk populations and supports equitable climate adaptation planning. The tool integrates public health data with climate models to enhance resilience efforts and guide targeted interventions. It is a valuable resource for data-driven decision-making in the era of extreme heat and climate-related health threats.