Delhi residents often report feeling hotter than what official temperature readings indicate. To investigate this phenomenon, a thermal camera was used to capture surface temperatures across various indoor and outdoor locations in the city. This method provides a more detailed understanding of heat distribution beyond conventional air temperature measurements. The study highlights how surfaces like roads, walls, and rooftops absorb and radiate heat, contributing to the overall sensation of increased warmth.
Urban heat islands, a common issue in densely populated cities like Delhi, exacerbate this effect. Materials such as concrete and asphalt retain heat throughout the day, releasing it slowly during the night, which raises ambient temperatures. Indoor environments also reflect this heat retention, especially in poorly ventilated or shaded areas. These factors combine to create a microclimate that feels significantly hotter than the meteorological data suggests.
Understanding the disparity between perceived and recorded temperatures is crucial for public health and urban planning. Excessive heat exposure can lead to heat stress and other health risks, particularly for vulnerable populations. This thermal imaging approach offers valuable insights for designing cooler urban spaces, improving building materials, and implementing heat mitigation strategies. Ultimately, such studies can guide policies aimed at enhancing comfort and safety in rapidly warming cities like Delhi.
