India’s Sweltering Nights Are Becoming A Growing Climate And Public Health Crisis

India’s summers have long been associated with extreme daytime heat, but experts now warn that rising nighttime temperatures are emerging as an equally dangerous threat for millions across the country.

According to data from the India Meteorological Department, average minimum temperatures during the pre-monsoon months of March to May have remained above normal in most of the last decade. Meteorologists say this trend is becoming increasingly worrying as nighttime conditions no longer provide enough relief after scorching daytime temperatures.

This year, several parts of India have continued recording night temperatures close to 35°C, creating severe discomfort, increasing health risks and placing additional pressure on the country’s power infrastructure.

Experts Warn Of Rising Heat Exhaustion Risks

Climate experts say prolonged heat exposure during the night is becoming more dangerous because the human body gets little opportunity to recover from daytime heat stress.

People living without reliable access to cooling systems, clean water and proper ventilation are considered especially vulnerable. Elderly residents, children, pregnant women and outdoor labourers face some of the highest risks during prolonged heatwaves.

Researchers also warn that poor urban planning is intensifying the crisis in cities.

Urban Heat Islands Making Nights Worse

Experts point to the rapid expansion of concrete infrastructure and shrinking green spaces as major contributors to rising nighttime heat.

The “urban heat island” effect causes roads, buildings and concrete surfaces to absorb heat during the day and slowly release it at night, keeping densely populated neighbourhoods significantly warmer even after sunset.

According to climate researchers, rapidly growing cities with limited tree cover and expanding road networks are trapping more heat than ever before, particularly in low-income urban areas where housing conditions often lack proper cooling or insulation.

Power Demand Surges As Nights Stay Hot

The extended heat has sharply increased electricity demand across India, especially during evening and nighttime hours when households rely heavily on fans, coolers and air-conditioners.

Several regions, including Delhi and Chennai, have witnessed power disruptions and localised blackouts due to rising consumption and overloaded distribution networks.

While solar energy has helped support daytime electricity demand, officials say nighttime supply remains under significant strain.

The situation has reportedly worsened this year due to disruptions in liquefied natural gas supplies linked to geopolitical tensions in the Middle East, affecting gas-based power generation capacity.

Uttar Pradesh Among Worst-Hit States

Uttar Pradesh has emerged as one of the most affected states during the ongoing heatwave season.

Reports suggest that many households in the state have experienced frequent daily power cuts, with outages lasting several hours in some areas. Residents across multiple districts have raised concerns over the impact of blackouts during extreme nighttime temperatures.

The town of Banda has recorded some of the country’s harshest conditions, with daytime temperatures approaching 48°C and nighttime temperatures remaining close to 35°C for prolonged periods.

Locals say many residents now spend evenings outdoors in search of cooler air because indoor conditions remain unbearable long after sunset.

Indoor Heat Emerging As Major Health Threat

Climate specialists say public policy has traditionally focused more on outdoor heat exposure while overlooking the growing dangers posed by indoor heat stress.

Poorly ventilated homes, overcrowded settlements and limited access to cooling infrastructure are making nighttime conditions increasingly hazardous for low-income communities.

Experts warn that indoor heat can become life-threatening during prolonged heatwaves, especially for those unable to afford air-conditioning or uninterrupted electricity supply.

Climate Change And Infrastructure Challenges

Researchers believe the rising frequency of extremely hot nights reflects both global climate change and India’s infrastructure challenges.

As temperatures continue to rise, experts say India will need stronger urban planning policies, expanded green spaces, improved housing design and more resilient electricity infrastructure to reduce the impact of future heatwaves.

Without long-term adaptation measures, scientists warn that India’s nights could become as dangerous as its days during peak summer months.