_{Air Pollution is a common thread across all cities, with Delhi, Patna, and Kolkata facing the most severe levels.}

_{Water Stress is critical in Lucknow and Chennai due to over-extraction and wetland loss.}

_{Urban Flooding affects Patna, Lucknow, and Chennai due to poor drainage and rapid urbanization.}

_{Coastal Challenges like erosion and marine pollution are unique to Mumbai, Chennai, and Kolkata.}

_{Biodiversity Loss is evident in Mumbai’s mangroves and Chennai’s wetlands.}