A shocking map shows the parts of the US with dangerous levels of pollution as air quality gets to unhealthy levels in three of the ten worst hit areas. This comes after Chicago was recently swamped ...

ROANOKE, Va. – Nearly half of the U.S. population is now living with unhealthy levels of air pollution. The primary culprits are extreme heat, persistent droughts, and increasingly frequent wildfires.

California and Oregon are among the U.S. hotspots for dangerous submicron (PM1) air pollution—those with particles less than a micron, or a millionth of a meter wide—according to new research.

Across all ages, the 2025 report counts 232 million healthy years of life lost to air pollution in a year. Most of that burden comes from noncommunicable diseases, lasting conditions like heart ...

For 25 of the 26 years the American Lung Association has reported State of the Air, Los Angeles—pictured here in smog—has been declared the city with the worst ozone pollution in the United States.

Breathing polluted air—even at levels considered “safe”—may quietly damage your heart. A new study using advanced MRI scans found that people exposed to more air pollution showed early signs of ...

Bay Area Air District officials announced a Spare the Air alert for Tuesday because of anticipated pollution levels. Air quality is forecast to be unhealthy, as high inland temperatures combine with ...