One part of Sydney has several suburbs with near perfect scores. But less than an hour away, it was a different story.

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Rather than relying solely on the Air Quality Index, Wexler recommends checking out PurpleAir Map, which tells you where the plumes of smoke are in real time. "If the plume is where you are or ...

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

Here's how to tell if you're in an area at risk. What is the Air Quality Index, or AQI? The Air Quality Index, often referred to as AQI, is a federal measure of the amount of air pollution ...

Tens of thousands of people have evacuated their homes and at least two have died in raging fires sweeping across Los Angeles County Wednesday. Multiple wildfires spread by strong Santa Ana winds ...

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

A map from AirNow suggests ... has significantly worsened air quality statewide, with some areas reporting hazardous levels exceeding 500 on the Air Quality Index (AQI). California has always ...

Blowing dust may result in air quality index levels that are unhealthy for sensitive groups or worse. The winds may disperse ash from the Palisades and Eaton fires, which have burned a combined ...

So the agency added a disclaimer above the map: “Windblown ash particles may be too large to be detected by air-quality instrumentation and not reflected in the Air Quality Index (AQI ...

you’ve probably seen maps tracking the area’s air quality, labeled by color and number, on the news. The air quality index (or AQI) is the U.S. Environmental Protection Agency’s way of ...