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Air Permits

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2/23/21 COVID-19 UPDATE: 

Thank you for your patience during the COVID-19 public health emergency. As state agencies continue operations, please understand that most of our staff are continuing to telework and may have limited access to files and delayed online connectivity.

Field work, including compliance inspections, is still taking place but at a limited basis. In most cases, staff will schedule pre-inspection calls with facilities to gather some of the information that would previously have been collected while on-site. These advance calls will also be used to discuss safety protocols for on-site visits that may be needed to complete all aspects of a compliance assessment.

Staff will keep their voicemails and out-of-office messages up to date and will respond as they are able.

For the most up-to-date information, please visit our COVID-19 information webpage. For program-specific information, please search keyword "COVID19."

Owners or operators of industrial sources that emit pollutants to the atmosphere need to get an air permit. A permit protects public health and the environment by requiring that owners or operators comply with all applicable state and federal air regulations. The DNR provides assistance to businesses, industry and the public to help better understand air permits, including when a permit is needed, the review process, applicable regulations, air quality modeling requirements and how to apply for a permit.

Apply for an Air Permit

Learn how to apply for an air permit.

Business Resources

Resources for businesses seeking an air permit.

Data Map

View air permitted facilities, facility emissions and air quality monitoring sites in Wisconsin.

Air Permit Process

Learn about the air permit process.


Search for an Air Permit.

Air Permit Public Notices

Stay informed about opportunities for public comment, including public hearings.

Small Business Assistance

Air permit assistance through the Small Business Environmental Assistance Program (SBEAP).