The latest publication of the United Nations Economic Commission for Europe (UNECE) aims to enhance the knowledge of national statistical offices on current and future information demands related to climate action. The publication uses the reporting mechanism under the Paris Agreement to examine how official statistics and data are provided for climate change mitigation, adaptation, just transition, climate-related costs, transfers, and financial flows. For each of these topics, it describes the policy context, showcases what the national statistical offices can offer now, identifies gaps and limitations, and provides recommendations on how to better meet user needs, while informing the public. The publication was prepared by a dedicated UNECE Task Force between and endorsed by the Conference of European Statisticians.