The May-June 2015 Indian heat wave killed 2,500+ people — the fifth-deadliest heat wave in recorded history — with temperatures exceeding 117°F (47°C) across multiple states. Andhra Pradesh and Telangana bore the heaviest toll (2,000+ deaths), as pre-monsoon heat combined with drought and power outages to create deadly conditions for agricultural laborers and urban poor.
Vulnerability & Infrastructure Gaps
The majority of victims were outdoor laborers, homeless individuals, and elderly people in tin-roofed homes without electricity for cooling. In Delhi, road asphalt melted at 113°F while power grids failed under record demand, leaving millions without fans or water pumps during peak heat hours (2pm-6pm when temperatures exceeded 110°F).
Social media coordinated heat relief efforts — volunteers distributed water at traffic signals, NGOs opened cooling centers, and hospitals set up emergency hydration stations. The hashtag shared heat safety protocols in Hindi, Telugu, Tamil, and Urdu, emphasizing shaded rest breaks, oral rehydration salts, and recognizing heat stroke symptoms.
Agricultural Impact
The heat wave coincided with critical planting seasons, forcing farmers to work during extreme temperatures or risk economic ruin. Thousands of laborers worked dawn-to-dusk shifts in 110°F+ heat, contributing to the death toll. Crop losses exceeded $2 billion as vegetables wilted, wheat yields declined, and irrigation water evaporated faster than aquifer recharge rates.
Climate Adaptation Challenges
The disaster prompted India’s National Disaster Management Authority to develop heat action plans for 130+ cities, including early warning systems, cool roof programs (white/reflective paint reducing indoor temperatures by 10°F), and workplace safety guidelines for outdoor labor.
However, implementation remained inconsistent across states, and subsequent heat waves in 2017, 2019, and 2022 continued claiming hundreds of lives annually. The 2015 event highlighted that developing nations face disproportionate climate impacts despite minimal historical emissions contributions.
Sources: India Meteorological Department, National Disaster Management Authority, World Bank, The Lancet Public Health