An Unusual Heat Wave Strains the World’s Most Populous Country

India faced an unprecedented heatwave in late April, with all 50 of the world’s hottest cities located within its borders, according to data from AQI. On April 27, average peak temperatures across these cities reached around 112°F, while Banda, the hottest city, saw overnight lows of 94.5°F. Though temperatures have slightly eased, forecasters warn further extreme heat is expected in May and June due to the El Niño pattern, worsening conditions already linked to climate change. The heatwave is straining India’s infrastructure, health, and economy. Only 8% of households have air conditioning, forcing reliance on passive cooling methods like shade or reflective roofs. Three-quarters of the workforce—many in agriculture or construction—labor in high-heat conditions, with informal workers making up 90% of the labor force and lacking basic protections. A Harvard Salata Institute white paper highlights systemic risks, including crop losses and disease spikes, particularly in Gujarat’s salt plains where workers endure temperatures above 110°F. Government data on heat-related deaths remains incomplete, but estimates suggest over 17,000 fatalities between 2000 and 2020. Experts emphasize the complexity of solutions, noting that some responses—like increased energy use for cooling—may worsen warming. The crisis underscores India’s vulnerability, where climate change intensifies baseline dangers across health, labor, and infrastructure. Forecasters predict more extreme heat events as El Niño strengthens, compounding challenges for a country already ill-equipped to handle such conditions. The situation reflects broader global trends, where rising temperatures disproportionately affect low-income populations with limited access to resources. Addressing the crisis requires coordinated efforts in housing, labor policies, and climate adaptation strategies.