An estimated 1,190 fewer all-cause deaths per year after implementation (2018 study); the model has been scaled to more than 40 Indian cities.
Figures reported by the city programme, verified against published case-study sources.
Background
A May 2010 heatwave pushed Ahmedabad above 46 °C and caused a sharp spike in mortality. In response, the Ahmedabad Municipal Corporation — with the Public Health Foundation of India, the Natural Resources Defense Council, and international researchers — developed South Asia’s first city-level Heat Action Plan, launched in 2013.
The intervention
- An early-warning system issues colour-coded heat alerts to hospitals, media, and the public days in advance
- Public cooling: temples, malls, and public buildings opened as cooling spaces; water distribution scaled up during alerts
- Cool roofs: high-albedo and lime-washed roofs piloted in low-income neighbourhoods to cut indoor temperatures
- Health-worker training so front-line staff recognise and treat heat illness
Results
A peer-reviewed evaluation estimated roughly 1,190 fewer deaths per year following implementation. The plan became the national template — India now has heat action plans in dozens of cities and states.
Lessons
A low-cost, communication-first approach — warnings, coordination, and cool roofs — can save lives before expensive infrastructure is built. Sustained political ownership and annual updates keep the plan effective.
