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

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

The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

Wildfire ash carries many carcinogens that could cause short- and long-term health problems, including asthma attacks and ...

Ash from the recent LA County fires and burn scars formed by other wildfires in the fall can be dispersed by strong winds.

The Commission for Air Quality Management (CAQM) in NCR and adjoining areas said it held a review earlier in the day and ...

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 ...

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

Los Angeles is now a week removed from the day that multiple devastating wildfires erupted to torch tens of thousands of ...

Here's what to know about improving your air quality at home during a wildfire—these expert tips help you breathe easier when ...