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

University of Utah researchers believe inflammation starts a months-long process that increases risk of aneurysm rupture.

Officials warn southeast Michigan residents to be careful outdoors Tuesday because of expected high ozone pollution levels.

The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

While attempting to improve air quality in China and across East Asia, regulators may have inadvertently contributed to a rise in global warming, according to a new study. Fewer aerosol emissions, ...

New research suggests that being exposed to air pollution for long periods can have similar effects to smoking and aging.

If you’ve been outside on a smoggy day, you’ve probably noticed that your body reacts poorly to bad air quality. Maybe you coughed, or got a headache. But what actually happens to your body when you ...

Several different types of air pollutants, including particle pollution and nitrogen dioxide, appear to increase risk of ...

Air pollution articles. Read scientific research on air pollution including pollution sources, health effects, and ways to reduce air pollution. Full text, images.

At 9:57 a.m. on Monday, the National Weather Service reported an air quality alert in effect until 10 p.m. for Oneida, Seneca ...

University of Utah Health researchers have linked particulate matter (PM2.5) air pollution with aneurysmal subarachnoid ...

Smoke from the Green Fire and other wildfires burning in and near Shasta County are polluting the air over the North State.