Pune's poor swelter: Homes trap heat at night

In Pune's low-income areas, homes trap heat, causing significant distress for residents, according to a new study. Even with fans, the air circulation becomes ineffective once indoor temperatures soar, and the high electricity bills for coolers make them unaffordable for many. Researchers found that a majority of households suffer from persistent headaches and exhaustion.

The study observed that homes with reinforced cement concrete roofs retain heat, with indoor temperatures peaking around 6 pm and remaining higher than ambient temperatures at night. This phenomenon exacerbates the impact of extreme heat on vulnerable populations who live in poorly ventilated dwellings.

Informal and outdoor workers are particularly at risk, facing invisible impacts on their heart and kidneys. While heatstroke deaths are reported, they represent a small fraction of the overall health burden. The research also surveyed 358 street vendors in Pune, revealing that extreme heat is a constant challenge, affecting their health and economic stability.

Vendors experience lost wages due to exhaustion and the need for healthcare, alongside spoilage of stock. This creates a cycle where they work longer hours to compensate, despite the health risks. The study calls for improved communication and adaptation plans that provide access to shade, water, and social safety nets for these communities.