AirNow is a collaborative effort of federal agencies that provides air quality data across the U.S. The site also has ...

“As long as these fires are burning, there’s just a ton of smoke in the air right now,” Sarah Rees, deputy executive officer ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the ...

Virtually all of Los Angeles is experiencing "unhealthy" air quality levels amid the devastating fires that ignited in early ...

This is Madison in New York with a special edition of the Prognosis newsletter. I’m worried the people in Los Angeles.

A map from AirNow suggests that the air quality around Los Angeles and Anaheim, California, is unhealthy as the Palisades ...

As thousands of acres burn across Southern California, wildfire smoke is causing poor air quality in the region and beyond.

Millions of Los Angeles County residents are facing extremely hazardous air quality as wildfires continue to burn. The air ...

The catastrophic wildfires in Los Angeles County have caused toxic air in the region. NBC News' Steve Patterson reports on ...

Already known for having some of the worst air quality in the U.S., people in Southern California are now also at risk of ...

On Wednesday at 12:26 p.m. an air quality alert was issued valid until Friday at midnight. The alert is for San Bernardino ...

An air quality alert was issued on Monday at 2:59 p.m. in effect until Wednesday at midnight. The alert is for San Bernardino ...