2025 greets us with two certainties: extreme heat has become a structural factor of urban life, and public budgets—if deployed with precision—can redirect city economies toward resilience. In 2024, concrete advances set the pace. In Mexico, the Programa de Mejoramiento Urbano (Urban Improvement Program, PMU) closed the six-year administration with more than 1,300 public works projects in 193 municipalities, directly impacting 13.5 million people. These are not cosmetic number