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 ...

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

The Minnesota Pollution Control Agency extended an air quality alert for southeastern and northern Minnesota on Tuesday due ...

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

The Air Quality Advisory issued by the Department of Environmental Protection is not the result of wildfire smoke, as it was ...

Sunday will have plenty of sunshine and light southerly breezes. However, several Pennsylvania counties will be under an air ...

Heavy surface smoke from wildfires in Canada is drifting across Minnesota on Monday, with unhealthy air quality levels ...

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

The National Weather Service reported an air quality alert at 12:43 p.m. EDT on Sunday in effect until Tuesday at noon EDT ...