While the sky has looked opaque today due to wildfire smoke, most of this smoke is elevated above the ground, minimizing air ...

Official air-quality results for Kyrene de la Sierra Elementary School show elevated levels of potentially harmful chemicals.

The state Department of Environmental Conservation had issued the Monday alert for 11 a.m. through 11 p.m. due to ozone ...

Because of Canadian wildfires, Minnesota high schools have had to watch how they practice to begin the season in a number of ...

An air quality alert was reported by the National Weather Service on Tuesday at 12:17 p.m. in effect until 8 p.m. for ...

An air quality alert was reported by the National Weather Service on Tuesday at 9:10 a.m. in effect until 11 p.m. for Western ...

On Tuesday at 8:20 a.m. the National Weather Service reported an air quality alert in effect until 11 p.m. for Passaic, ...

The National Weather Service reported an air quality alert at 8:43 a.m. on Monday in effect until 11 p.m. for Northern ...

Ozone pollution in Portland, Gresham and other cities could reach unhealthy levels for sensitive groups Tuesday afternoon.

A wave of hot, and unhealthy, air has hit New Jersey, and the region could get some much-needed rain this week.

While not everyone will be impacted by air quality on Wednesday, those who have been sensitive to poor air quality this ...

The Kyrene School District released an air quality report on Tuesday showing the air quality measurement at the Kyrene De La ...