The Trump administration’s attempt to roll back numerous vehicle pollution standards has left states wondering what’s next.

The EPA’s slashing of more than $1 billion in grant funding has hit hard in Western communities that have felt climate impacts from flooding, wildfire smoke and melting permafrost.

U.S. News calculated a population-weighted average from available figures to determine the air quality a typical person in the state experiences, based on population estimates from the U.S. Census ...

applicants must live in Washington state, be at least 16 years old, provide contact and demographic information, and have an ...

It comprises two measures: the number of days with an air quality index below a certain threshold and the number of violation points against drinking water systems in each state. Learn more about ...