China,like many countries,is under great pressure to reduce climate change and adapt to current situations while simultaneously undertaking economic development and transformation.This study takes advantage of climate opportunities and provides a new concept and mode of urban climate services in order to address climate change.Eighteen indicators based on climate and climate-related variables were used to provide an assessment,in the form of an index,of how livable a city is depending on prevailing climatic conditions.The resulting index can also be used to investigate how recent and future changes in the climatic conditions could affect livability.All Chinese cities and regions share the common goals of promoting low-carbon development,improving resilience against climate change,and integrating economic growth with climate ac-tions.Climate services have been developed in China to provide decision-makers this measure of livability.Such a move facilitates sustainable development alongside economic growth by aiding government efforts in climate adaptation and low-carbon development.Our approach represents multidisciplinary and demand-driven research on adaptation to and the impacts of regional climate change,thereby transforming climate science into a climate service and ensuring that climate information can be provided in a scientific,practical,and customized way for policy-makers.The outputs can be used locally to take concrete climate actions and integrate climate services into decision-making processes.