An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

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.

Approved Air Quality Implementation Plans

Use the map below to find the following types of approved air quality implementation plans around the nation:

  • State Implementation Plans (SIPs)
  • Tribal Implementation Plans (TIPs)
  • Federal Implementation Plans (FIPs) 

Map of the US, split into EPA regions Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont New Jersey, New York, Puerto Rico, US Virgin Islands Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee  Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin Arkansas, Louisiana, New Mexico, Oklahoma, Texas Iowa, Kansas, Missouri, Nebraska Colorado, Montana, North Dakota, South Dakaota, Utah, Wyoming Arizona, California, Hawaii, Nevada, Pacific Islands Alaska, Idaho, Oregon, Washington