Do you know how many super polluters are on your doorstep? A first-of-its kind tool, from a group backed by former vice president and climate activist Al Gore, wants to show you just that. And the ...

Toxic air isn't spread evenly across the U.S. — some communities are being forced to shoulder the worst of it. A new map is exposing exactly where petrochemical pollution is most dangerous, and who's ...

PurpleAir sensors provide real-time air quality data for the tool. A new tool offers a window into some of the invisible polluting particles that can make it harder to breathe — and where they are ...

A layer of haze continues to hang over the Valley.

As high pressure remains overhead, the air quality is impacted.