An official website of the United States government.
We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.
Our Nation's Air: Status and Trends Through 2017(link will open in a new tab or window)
Air Quality Progress Continues in 2017
EPA tracks trends in six key pollutants called criteria air pollutants.
Overview of Air Quality Through 2018
Explore air quality trends interactively - Our Nation's Air: Status and Trends Through 2017(link will open in a new tab or window)
See other links for air quality data and tools
Contact Us to ask a question, provide feedback, or report a problem.