Houston recently got an F grade for its air quality. Here's how Saharan dust and agricultural wildfire smoke are brought to ...

Phoenix residents are being urged to limit physical activity as ozone levels spike to unhealthy levels, posing risks to kids, ...

Particle and ozone pollution have been linked to a number of negative health impacts, including mild respiratory conditions ...

In a sweeping new study of more than 13,000 urban areas worldwide, researchers have mapped air pollution levels and carbon ...

Government officials and advocates used them to help communities disproportionately affected by climate change and pollution.

More than 50,000 people face unhealthy levels of air pollution across parts of Nevada on Wednesday, according to the U.S. Environmental Protection Agency (EPA).

It's always encouraged to avoid breathing in smoke, and remember the air quality still may be unsafe even if you do not smell ...