dispersion Urban Heat Islands (UHIs) have become a growing concern in recent years due to their impact on the environment and human health. UHIs are defined as areas in urbanised regions where the temperature is significantly higher than in surrounding rural areas. The formation of secondary pollutants is a serious concern in urban environments, and the influence of UHIs on this process has been extensively studied. This blog post discusses how UHIs influence secondary pollutant formation and explores some of the implications of this phenomenon for human health and the environment.