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

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 ...

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

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

At 8:13 a.m. on Tuesday, the National Weather Service reported an air quality alert in effect until 11 p.m. for Morris, ...

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

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

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 ...

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

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

New York City and the Lower Hudson Valley are on alert for poor air quality once again on Tuesday, Gov. Kathy Hochul ...

WAUSAU, Wis. (WSAW) - While not everyone will get rain on Tuesday, those who do get storms could experience either strong ...