The agency says air quality is expected to reach the orange Air Quality Index (AQI) category, which is unhealthy for ...

The South Coast Air Quality Management District issued a windblown dust advisory Sunday for the northwestern area of the Coachella Valley.

But that doesn’t tell the whole story. That’s because the air quality index, or AQI, provides an average over longer periods of time — eight hours for ground-level ozone and 24 hours for ...

U.S. air quality has improved in recent decades, but there is still a lot of room for improvement, especially in primarily BIPOC communitie ...