CalHeatScore Mapping Tool

• Published by: California Office of Environmental Health Hazard Assessment
• Last updated: Tuesday, December 9, 2025
• File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

CalHeatScore is a public health tool to help Californians stay informed, ready, and safe when temperatures rise. The purpose of CalHeatScore is to red...