This World Bank report explores the increasing risks of urban heat in the context of climate change and presents actionable strategies to build climate resilience. It emphasizes the urgent need for urban planning, infrastructure design, and policy interventions that reduce exposure and vulnerability to extreme heat, particularly for low-income and marginalized populations. The report highlights global examples, financial tools, and cross-sector collaboration mechanisms to help cities adapt. Integrating heat risk into development planning is presented as essential for achieving climate-resilient and equitable urban growth. The findings serve as a guide for policymakers, city planners, and development agencies.