Air

The Air Division is responsible for ensuring that air quality within Mississippi is protective of public health and welfare. The division is charged with controlling, preventing, and abating air pollution to achieve compliance with air emission regulations pursuant to the Mississippi Air and Water Pollution Control Act, applicable regulations promulgated by the U.S. Environmental Protection Agency (EPA), and the federal Clean Air Act.

To sign up to receive notifications on Air Division notices or air-related updates, please visit our Air Notice Distribution Webpage.

For information regarding air permits and related application forms, visit the Environmental Permits Division.

For information regarding air compliance and enforcement, visit the Environmental Compliance and Enforcement Division.

State Rulemakings

Federal Rulemakings

Wednesday, January 22, 2025.

National Emissions Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Source (CMAS), Technology Review, Proposed rule (a new area source category for Ethylene Oxide (EtO), plus…)

Thursday, January 16, 2025

New source Performance Standards and Emission Guidelines for Existing Sources: Large Municipal Waste Combustors Voluntary Remand Response and 5-Year Review, Proposed rule.

Wednesday, January 15 & 17, 2025

New Source Performance Standards for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources:

Oil and Natural Gas Sector Climate Review. Proposed amendments

EPA is proposing amendments in response to petitions for reconsideration. Specifically, this action proposes discrete technical changes to two different aspects of the rules.

Tuesday, January 7, 2025

Re-classifications of Major Sources as Area Sources of the Clean Air Act: Correction to General Provisions.

Tuesday, January 7, 2025

National Emissions Standards for Hazardous Air Pollutants: Perchlorethylene Standards for Dry Cleaning Facilities, Technology Review, final determination.

“This final rule does not finalize the changes made at proposal and makes no amendments to the current NESHAP”

News and Notices

2026 Annual Monitoring Network Plan 30-day Public Review May 16th, 2025, until June 20th, 2025

Ongoing Data Requirements Rule Verification 2010 1-Hour Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard (NAAQS) 30-day Public Review May 7th, 2025, until June 9th, 2025.”

MDEQ is providing notice of the final 2025 Annual Monitoring Network Plan (AMNP) and the official response to comments received during the 30-public comment period (May 28 – June 28, 2024).

Contact Information

Air Division Organizational Chart