The US cities with the dirtiest (and cleanest) air
Written by Black Hot Fire Network on April 10, 2022
(NEXSTAR) – The World Health Organization announced this week that 99% of the world’s population breathes poor-quality air, that when inhaled over time can cause cardiovascular and respiratory disease.
While cities in the developing world have the worst air quality, according to the WHO, pollution is still a problem in American cities. There are chronic sources of air pollution, like vehicle traffic on busy highways, as well as seasonal issues, like smoke from wildfires.
The American Lung Association tracks air pollution in U.S. cities. Its 
