Contributing: Eduardo Cuevas, John Bacon, Michelle Maltais, USA TODAY This article originally appeared on USA TODAY: Los Angeles air quality and smoke maps: See latest AQI numbers in Southern ...

Despite decades of progress in reducing air pollution, Los Angeles is still the nation's smoggiest city, according to a ...

ABC News joined The Arbor Day Foundation and the Altadena nonprofit Amigos de los Rios to discuss replanting and preserving ...

In fact, the AQI could be in a healthy range ... operates about 35 air monitoring stations across nearly 11,000 square miles ...

Residents across New York and New Jersey are dealing with poorer air quality than usual, but a new report revealed that even ...