Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the ...

Cities in California make up a significant proportion of the country's most polluted metropolitan areas when it comes to air ...

Several U.S. cities are experiencing heightened air pollution levels on Wednesday, including parts of Chicago.

Not everyone was reporting the dangerous air quality levels, though. The Environmental Protection Agency’s AirNow is a go-to ...

Smoke from a NJ wildfire is pushing NYC air quality into the danger zone. Officials urge sensitive groups to limit outdoor ...

For more than a quarter-century, the American Lung Association has taken the pulse of our nation’s air quality with its ...

Shifting winds have been pushing smoke and tiny particles from the big Ocean County wildfire north towards New York City, ...

The Houston area is among the worst in the country for air quality, according to the American Lung Association's State of the ...

The instrument doesn’t see every fire, but it will see large fires that may be contributing to air pollution. In these images ... Click on the atmosphere tab under the map Select “aerosol optical ...

The American Lung Association has released its annual “State of the Air” report and several major cities are among the worst ...

A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...