An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Clean Air Markets

Additional Information about the U.S.-Canada Air Quality Agreement

Read documents pertaining to the U.S.-Canada Air Quality Agreement, including joint statements and the official agreement between the two governments.

View the U.S.-Canada Air Quality Agreement for related information.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.