"Despite decades of environmental efforts, over 40% of Americans — more than 137 million people — live in cities and states with poor air quality, a new report says. And, in addition to cars and factories, wildfires are increasingly contributing to unhealthy air.

For the past 22 years, the American Lung Association has produced its annual State of the Air report, which analyzes the air quality on a local level for communities across the country. This year's study found that more Americans were exposed to unhealthy air, at times deemed hazardous, compared to previous years.

In fact, more than 63 million people lived in counties that had dangerous levels of deadly particulate matter pollution — an increase of nearly 9 million over the last year. These particles are made up of dust, ash, soot and metals. They come from gas-powered vehicles and industrial plants, however in more recent years, dangerous spikes in particulate matter readings are coming from wildfires, which are burning hotter, faster and longer."

Dustin Jones reports for NPR April 21, 2022. [2]

SEE ALSO:

"The ‘State of the Air’ in America Is Unhealthy and Getting Worse, Especially for People of Color" (Inside Climate News) [3]