South Asia emerges as a prominent region with some of the highest levels of air pollution. Bangladesh has the worst air quality globally with a PM2.5 concentration of nearly 80 μg/m³, almost 16 times higher than the WHO’s annual guideline of 5 μg/m³. Pakistan ranks a close second with 73.7 μg/m³, while its neighbor India comes third with 54.4 μg/m³. Although India has a lower PM2.5 concentration, pollution can travel across national borders, affecting neighboring countries, as is evident in South Asia. Air pollution can travel around the world, harming people far from its origin. This means that the most prolific polluters can potentially negatively impact people's health in areas that do not pollute as much, making the minimization of air pollution a globally collaborative effort.