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

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

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.

People are taking precautions as multiple wildfires cause poor air quality across a wide swath of Los Angeles County.

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

Smoke from the raging Southern California wildfires is filling city skylines, causing officials to warn residents of poor air ...

LOS ANGELES — Massive wildfires burning in the Los Angeles area have filled the air with a thick cloud of smoke and ash, ...

As smoke pours from the intense wildfires currently scorching Los Angeles, air quality has plummeted across the city due to ...

An air quality alert was issued on Thursday at 4:59 p.m. in effect until Friday at 5 p.m. The alert is for San Bernardino and ...

Smoke from the raging Southern California wildfires is filling city skylines, causing officials to warn residents of ...

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