While ozone pollution is typically a summer phenomenon in Maricopa County, ozone season stretched well into the fall this year. High ozone levels usually drop off in mid-September, but Maricopa County ...

The cold winter months may bring temporary relief from Colorado’s long-running ozone pollution problem, but it’s crunch time for air quality planners and regulators hoping to finally clear the air ...

For a large part of the last two weeks, Steven Brown, an air quality chemist with the National Oceanic and Atmospheric Administration, has soared over Colorado’s Front Range in a slow-flying Twin ...

The ozone layer, Earth's invisible shield against harmful ultraviolet radiation, sits quietly in the stratosphere between roughly 15 and 35 kilometers above our heads. For decades, scientists watched ...

The EPA is considering delaying a decision that would classify metro Phoenix's ozone problem as "serious" and potentially bring serious economic consequences. Local officials say they are working to ...

MEMPHIS, Tenn. - As ozone levels lower in cities across the country, they are increasing in the Mid-South. Ozone is better described as smog. It gets into our air through emissions from factories, ...

Chronically high levels of ozone plague Colorado’s Front Range, which stretches from Fort Collins through the Denver metropolitan area and Colorado Springs. Colorado’s Front Range air quality problem ...

Utah’s ozone problem could lead to higher disability rates in children, according to a recently published study. Ozone’s negative effect on lung function and other health outcomes is well documented, ...

That describes Forsyth County’s ozone levels, according to a new report on air quality from the American Lung Association. The association gave Forsyth County an F for ozone levels. The county did ...