Los Angeles County is the focus of an air quality alert reported at 1:58 p.m. on Wednesday by the National Weather Service.

At 1:58 p.m. on Wednesday, the NWS Los Angeles/Oxnard CA reported an air quality alert in effect until Saturday at 11 p.m.

On Wednesday at 2:12 p.m. an air quality alert was reported by the NWS San Diego CA in effect until Sunday at midnight. The ...

A new tool seeks to change that. It provides real-time air quality data from four stations located atop buildings in ...

An air quality alert was reported by the National Weather Service on Sunday at 9 a.m. in effect until 8 p.m. for Westmoreland ...

At 4:30 p.m. on Saturday, the National Weather Service reported an air quality alert in effect until Sunday at 4 p.m. for ...

An air quality alert was reported by the National Weather Service on Saturday at 3:45 p.m. in effect until Monday at midnight ...

The National Weather Service reported an air quality alert at 3:45 p.m. on Saturday in effect until Monday at midnight for ...

How a new monitoring system improves fire detections and captures the air pollution effects of planned peatland burns.

Sensitive groups are at a higher risk of health issues due to the outside air, according to area air quality experts.

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

Potentially hazardous air quality has gripped Phoenix, Arizona, as a combination of stagnant weather, windblown dust, and warm temperatures fueled a rise in PM10 pollution, prompting hazy skies and ...