Have you ever noticed the strange, colorful splotches clinging to rocks, tree bark, or even old fences after a rainy day?

Millions of people in California have been urged to avoid grilling on Wednesday amid concerns over high air pollution levels.

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

Smoke travels hundreds of miles to harm air quality far from the fire, according to the EPA’s Wildfire Smoke and Your Patient ...

Indiana ranks worst in the U.S. for lung health due to high smoking rates and poor air quality, while Colorado and Hawaii ...

MIchigan's air quality will be unhealthy for some groups Saturday. Check the air quality index map to see if it's good or bad ...

MIchigan's air quality will be unhealthy for some groups Friday and Saturday. Check the air quality index map to see if it's good or bad near you.

Poor air quality caused by ozone and other sources prompted the warnings across six states on Thursday and Friday.

The money will be used to install several air quality sensors in Memphis to track air pollution “around the clock." ...

SANTA BARBARA COUNTY, Calif. – The Santa Barbara County Air Pollution Control District announced an upgraded version of its Permitted Facilities Map, an interactive online tool of the county's ...

The Santa Barbara County Air Pollution Control District (APCD) offers its upgraded Permitted Facilities Map, which serves as an easy-to-use tool for the ...

The Illinois EPA declared an Air Pollution Action Day in the Chicagoland area. Find out which counties are affected and what you should look out for.