After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free ...

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 improvement in air quality coincided with the revocation of Stage 4 of the Graded Response Action Plan (Grap) on Thursday ...

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 ...

Chandigarh: Over a 48-hour period, the city experienced its most dramatic air quality deterioration this month, shifting from ...

Wear a tight-fitting N95 mask at the bare minimum, but a P100 is better, experts say. Wear long sleeves, eye protection, ...

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

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

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

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