Creates a NOAA‑based national heat‑health system and an interagency committee to coordinate federal actions on extreme heat, improve forecasts/warnings and data sharing, fund research, and run a community heat resilience grant program with priority to environmental‑justice and low‑income communities. Requires a National Academies study on gaps and best practices, directs strategic planning and periodic reporting, and authorizes multi‑year funding for NOAA program operations, the study, and community assistance.