According to data from the American Lung Association's State of the Air report for 2024, a list of the most polluted cities in the US is provided below, with Bakersfield, CA, and Visalia, CA, topping the list.

The World Health Organization estimates that air pollution causes seven million deaths per year and might cost the world economy $18–25 trillion in welfare expenditures annually by 2060, or roughly 4–6% of GDP.

Furthermore, cities are quickly emerging as key players in the wor...