Congestion Mitigation and Air Quality Improvement Program (CMAQ)

Department Of Transportation, Federal Highway Administration

Congestion Mitigation and Air Quality Improvement (CMAQ) Program funds are limited to projects and programs that reduce transportation related emissions air quality non-attainment and maintenance areas for ozone, carbon monoxide, and particulate matter, though provision is made for States without air quality issues. This Assistance Listing 20.268 created in August 2025 was included in the previous ALN 20.205, please refer to former ALN 20.205 for FY24 and FY25 financial obligations. The new Ass

Jargon-free version

Helps state and local governments pay for transportation projects that reduce traffic and improve air quality. Funding is for areas struggling with air pollution or those that have improved.

Quick Facts

Funding
Contact for details
Deadline
Rolling
Status
Rolling Intake
Category
Regional & Community Development
Organization
Department Of Transportation, Federal Highway Administration

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What Is This Program?

Congestion Mitigation and Air Quality Improvement Program (CMAQ), continued under IIJA, provides a flexible funding source to State and local governments for transportation projects and programs to help meet the requirements of the Clean Air Act. Funding is available to reduce congestion and improve air quality for areas that do not meet the National Ambient Air Quality Standards for ozone, carbon monoxide, or particulate matter (nonattainment areas) and for former nonattainment areas that are now in compliance (maintenance areas).

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How Do I Apply?

J.Malcom.Smith@dot.gov
2023665880

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FAQFrequently Asked Questions

Visit the program page for detailed eligibility requirements.

Contact the program administrator for funding details.

This program accepts applications on a rolling basis.

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