Weather conditions are trapping smoke and other air pollutants near the ground where people breathe, officials said.

The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

Even though the Palisades and Eaton fires are now mostly contained, the Santa Ana winds have led to new fires flaring up ...

An air quality alert was issued on Tuesday at 5:03 a.m. for Josephine County.

The Oregon Department of Environmental Quality issued an air quality advisory for Eastern Lane, Eastern Linn, Eastern Marion, ...

Vog, a mix of volcanic dust and gases, can cause health issues like eye and throat irritation, coughing, and shortness of ...

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — ...

As fires sweep through Los Angeles County, residents face mounting concerns about contaminated air and water supplies ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...

(Reuters) - Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as ...

According to AirNow.gov, Mountain View and Pahala is currently experiencing unhealthy air quality levels for sensitive groups. Vog, also known as smog or haze, contains volcanic dust and gases.