The G7 event “From the G7 Health Communiqué to Action – Health and Climate: Heat Preparedness through Early Warning Systems” on 29 November 2022 recognized the importance of scaling up and enhancing Heat Health Warning Systems (HHWSs) and corresponding policy actions as key instruments for building resilience to climate variability and change in the health sector.

This report captures the expert discussions during the event on the state of implementation, opportunities, challenges and advances in protecting communities from increasing extreme heat. Its conclusions allow the G7 countries to learn from each other and share important lessons with the broader global community.

This report has been prepared by the WMO – WHO Joint Office for Climate and Health in close coordination with the German Federal Ministry of Health in the context of Germany’s G7 presidency and the health and climate event as part of the G7 Health Track. The report will serve as a contribution to the Global Heat Health Information Network (GHHIN).