Nearly 40% of Americans live in areas with unhealthy air quality, endangering their health.

The rise in air pollution is linked to climate change factors including extreme heat, droughts, and wildfires, predominantly in Western U.S.

Despite the Clean Air Act's success, air pollution persists with particle pollution being particularly harmful.

The American Lung Association urges for stricter emissions reductions and stronger climate change policies to combat air pollution.

The Bay Area's worsening air quality is exacerbated by wildfires, traffic, and freight emissions.

Air pollution contributes to serious health risks such as respiratory issues, heart attacks, and strokes.

The Biden administration is implementing new standards to cut diesel vehicle emissions, but faces budgetary challenges in California.

Minority communities suffer more from air pollution, necessitating more robust protective regulations.

Los Angeles, Bakersfield, and Phoenix rank as some of the cities with the worst air pollution.