Parents and educators are being warned to limit children's time spent outdoors in parts of southern New Mexico and El Paso, Texas, on Thursday, as forecasts from the U.S. Environmental Protection ...

In California, the South Coast Air Quality Management District has issued an alert through 11:59 p.m. Friday for the Coachella Valley because of high levels of particle pollution from windblown dust.

Over half of U.S. counties lack air quality monitoring stations, exposing 50.7 million people, especially in rural and ...