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

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

Epidemiological studies have linked dirty air to dementia and other brain disorders. Now researchers are trying to determine ...

Douglas McIntyre, Editor-in-Chief at Climate Crisis, discusses how Los Angeles’s current air pollution levels surpass those ...

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

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

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — ...

The hazardous air quality in Los Angeles is largely a result of smoke from the Pacific Palisades Fire, intensified by strong ...

The Air Quality Index (AQI) can tell you a lot about the health of the environment, but there are still measures you can take ...

Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.

The wildfires burning across LA are also degrading the air quality across the region. The resulting air pollution is a ...

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