While developing a city level approach for the National Mission on Sustainable Habitat (NMSH) a question was raised: ‘How many cities in India are vulnerable to climate change and in what way?’ This is an Executive Summary of a study which lies in this question. Cities in India are exposed to a variety of natural hazards and face additional risk due to climate induced extreme events such as flood, droughts, heat and cold waves. This can occur with varying intensity at varied geographical scales and degree of exposure. An increasing concentration of population, coupled with extreme events, result in high damages to assets, interruptions in business continuity, opportunity losses, loss of lives, displacement of populations, which is further enhanced by economic and social vulnerability and reduced the capacity of the urban system and services to adapt to climate variability and change.