The smaller particles could in fact be more harmful as they can get through the body's natural defenses and cause significant health problems.

A series of live maps from Windy.com highlighted which parts of the U.S. were experiencing elevated levels of air pollution ...

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for Illinois.

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

Smoking, air pollution and several other factors have led to significant disparities in lung health across the U.S.

To help us gain a better understanding of air quality around the world, BreezoMeter, an air quality analytics provider, is visually breaking things down with a new interactive air pollution map.

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...

A new report revealed concerning findings about America's air, but some cities are doing better than others. As part of the report, the American Lung Association ranked the 10 best and worst ...

Smoke from wildfires still raging in Canada is degrading air quality across the northern U.S., turning skies a murky orange ...

The alert warns of serious health effects from particle pollution and advises all residents—especially sensitive groups—to limit outdoor activity depending on the air quality index level.