Tools for State Implementation Plan (SIP) Status
EPA works closely with state and local governments as they develop plans to make progress toward improving air quality. This page links to several tools to help the public and state and local governments track progress toward national clean air goals.
- Nonattainment and Maintenance Area Population Tool
- Nonattainment and Maintenance Area Dashboard
- Required State Implementation Plan Elements Dashboard
- State Implementation Plan Status Tools Overview Video
- Status of Active Sanction Clocks
Related information:
- Learn more about the dramatic improvements in air quality in the United States since the implementation of the Clean Air Act in Our Nation’s Air report.
- Learn more about the criteria air pollutants that EPA regulates, health impacts, and how EPA sets air quality standards.
- Learn more about how EPA and state and local governments work together to improve air quality and meet national standards through the NAAQS implementation process.
- Find information about current and forecast air quality where you live at AirNow.gov.
- Learn more about air quality and your health
Nonattainment and Maintenance Population Tool
About this tool:
This tool displays the number of people living in designated nonattainment and maintenance areas for each NAAQS, based on the latest U.S. Census data. It also displays the individual counties in nonattainment and maintenance areas on an interactive map.
Related information:
- Find approved air quality implementation plans (SIPs/FIPs/TIPs)
- Nonattainment areas for criteria pollutants ("Green Book")
- Redesignation and Clean Data Policy
- NAAQS implementation process
Areas Designated Nonattainment or Maintenance Dashboard
About this dashboard: The Nonattainment and Maintenance Area Dashboard provides information about nonattainment and maintenance areas for current and revoked NAAQS. Information in the dashboard can be filtered by state, NAAQS, area name, area status, area classification, and other fields. When viewing information about a specific area, the history of EPA actions on the area is displayed at the bottom of the page. For more information about a particular nonattainment or maintenance area, please visit the EPA Green Book and the Nonattainment and Maintenance Population Tool (add link)
See also: Where to find EPA actions on SIP submittals in the Federal Register.
Required State Implementation Plan Elements Dashboard
About this dashboard: This tool provides details about individual states’ Clean Air Act and regulatory planning requirements associated with implementing, attaining, and maintaining the National Ambient Air Quality Standards (NAAQS) through SIPs. The dashboard includes information for nonattainment and maintenance areas for current and revoked NAAQS. Information in the dashboard can be filtered by state, plan category, NAAQS, area, and specific SIP element. For more information about the required SIP elements visit: Develop Air Quality Implementation Plans.
Learn more about nonattainment area requirements:
Learn more about infrastructure area requirements:
See also: Where to find EPA actions on SIP submittals in the Federal Register.
Status of Sanction Clocks
Overview: The link below shows a table of the status of sanction “countdown” clocks under the Clean Air Act that have been started and have not yet been officially terminated. (Additional background is provided at the end of this document.) The “Date of Sanction” columns indicates the date by which sanctions have applied or would apply if they have not been stayed or deferred. The “Sanction Clock Stayed or Deferred” column indicates whether EPA has taken an action to stay the relevant sanction after it had started to apply; and/or whether EPA has taken an action to defer one or both sanctions that had not yet applied. Additional information is available under the “Status” column. Maps for the areas referenced in this table are available at: https://www.epa.gov/green-book/green-book-map-download.