SACRAMENTO – With summer around the corner and in the wake of a record-setting March 2026 heatwave, Governor Newsom recently announced a new feature to integrateCalifornia Communities Extreme Heat Scoring System (CalHeatScore) data into a wide range of applications to help Californians stay safe during extreme heat.

CalHeatScore, released last year, is a cutting-edge tool to forecast and rank the risk hot weather poses to public health and connect Californians with available resources to stay safe during extreme heat events.

The new CalHeatScore application programming interface (API) gives app developers, weather services, local governments, nonprofits, universities, medical providers, emergency response entities, and data-driven reporters access to live data that can be integrated into a wide range of applications, such as community alerts, emergency response planning, and newscasts.