Tracking Climate Change Riskto Health across National andSubnational Levels to PrioritizeAdaptation InvestmentPublic Disclosure Authorized © 2026 International Bank for Reconstruction and Development / The World Bank1818 H Street NWWashington DC 20433Telephone: 202-473-1000Internet: www.worldbank.org This work is a product of the staff of The World Bank with external contributions. The findings, interpretations, andconclusions expressed in this work do not necessarily reflect the views of The World Bank, its Board of ExecutiveDirectors, or the governments they represent. The World Bank does not guarantee the accuracy, completeness, or currency of the data included in this work anddoes not assume responsibility for any errors, omissions, or discrepancies in the information, or liability with respectto the use of or failure to use the information, methods, processes, or conclusions set forth. The boundaries, colors,denominations, links/footnotes and other information shown in this work do not imply any judgment on the part ofThe World Bank concerning the legal status of any territory or the endorsement or acceptance of such boundaries.The citation of works authored by others does not mean the World Bank endorses the views expressed by thoseauthors or the content of their works. Nothing herein shall constitute or be construed or considered to be a limitation upon or waiver of the privileges andimmunities of The World Bank, all of which are specifically reserved. Rights and Permissions The material in this work is subject to copyright. Because The World Bank encourages dissemination of itsknowledge, this work may be reproduced, in whole or in part, for noncommercial purposes as long as full attributionto this work is given. Any queries on rights and licenses, including subsidiary rights, should be addressed to World Bank Publications,The World Bank Group, 1818 H Street NW, Washington, DC 20433, USA; fax: 202-522-2625; e-mail: pubrights@worldbank.org. Attribution Please cite the work as follows: World Bank. 2025. The Climate and Health Risk Index: Tracking Climate Change Risk toHealth across National and Subnational Levels to Prioritize Adaptation Investment. Washington, DC: World Bank. Translations If you create a translation of this work, please add the following disclaimer along with the attribution: This translationwas not created by the World Bank and should not be considered an official World Bank translation. The World Bankshall not be liable for any content or error in this translation. Adaptations If you create an adaptation of this work, please add the following disclaimer along with the attribution: This is anadaptation of an original work by the World Bank. Views and opinions expressed in the adaptation are the soleresponsibility of the author or authors of the adaptation and are not endorsed by the World Bank. All queries on rights and licenses should be addressed to World Bank Publications, The World Bank, 1818 H StreetNW, Washington, DC 20433, USA; e-mail: pubrights@worldbank.org. Contents Acknowledgements v Summaryvii GlobalviiiRegional Highlights: AfricaixFocus on Districts of Uttar Pradesh state, IndiaixFurther Developmentx 1.Introduction 1 231.1. Other Indices of Climate Change and Health1.2. Key Gaps Addressed by a New Index 2.Methods 6810111213142.1. A Risk-Based Framework for Climate Change and Health2.2. Estimating Climate Change Exposure2.3. Estimating Sensitivity to Climate Change Effects on Health2.4. Estimating Adaptive Capacity2.5. Principal Components Analysis and Index Construction2.6. Uncertainty Impact Analysis2.7. Data Limitations 3.Results 172122243.1. Climate and Health Risk Index at the National Level3.2. Climate and Health Risk Index at the Subnational Level3.3. Climate and Health Risk Index Deep Dive – India Districts3.4. Linkages of CHRI Results with Key Trends 4.Discussion 4.1. Summary of Key Implications Annexes Annex 1. Variables used in the Climate and Health Risk Index30Annex 2. Methods for Estimating Exposure at Subnational Level37Annex 3. Additional Details on Sensitivity Analysis40Annex 4. Additional Details on Principal Components Analysis41 4951Annex 5. Additional Details on Uncertainty Impact AnalysisAnnex 6. Climate and Health Risk Index at National Level – TablesAnnex7. Climate and Health Risk Index at Subnational Level – Maps65 References Acknowledgements This report was produced by the Global Climate and Health Program in the Health, Nutrition, and PopulationGlobal Practice of the World Bank. The overall work was led by Mikhael Gabriel Iglesias Luzardo (Health Specialist) and Zara Shubber (SeniorHealth Specialist, World Bank) under the overall guidance of Tamer Samah Rabie (Global Program Lead, Climateand Health, World Bank). The Climate and Health Risk Index was conceptualized byZara Shubber andArinDutta (formerly World Bank) andtheanalyseswereconductedby Arin Dutta and Mingyue(Cynthia)Ma (World Bank). The report greatly b