What are urban heat islands?

Urban heat islands refer specifically to urban areas that experience higher temperatures than their rural surroundings. This phenomenon occurs due to several factors associated with city development and infrastructure. Urban areas typically have a higher concentration of buildings, roads, and other man-made surfaces that absorb and retain heat, leading to increased temperatures. Additionally, the lack of vegetation in cities, which naturally cools the environment through shade and evapotranspiration, exacerbates this heat retention.

Understanding the concept of urban heat islands is crucial as it highlights the challenges posed by climate change and urbanization, including increased energy consumption, elevated emissions of air pollutants, and heightened heat-related health risks. Recognizing that urban heat islands reflect the contrast between the highly developed environment of cities and the more natural setting of rural areas is essential for addressing urban planning and environmental sustainability issues.