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  1. Home
  2. Carbon Monoxide (CO) Pollution in Outdoor Air

Contact Us about Carbon Monoxide (CO) Pollution

 
 

Information is also available for the following topics:

  • Air quality and air monitoring data nationally and locally
  • Environmental protection activities in your region
  • Air inside your home or other indoor locations 
  • Air pollution from transportation

​On CO air pollution:

  • Status and trends in CO in ambient air 

For comments or questions on the national ambient air quality standards for CO more generally, please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response.

Mailing Address:

Environmental Protection Agency
Office of Air and Radiation (OAR) 6101A
1200 Pennsylvania Avenue, N.W.
Washington, DC 20460


If you would like a response, please add your email address.
Please provide a number if you would like to be contacted by phone.

Carbon Monoxide (CO) Pollution in Outdoor Air

  • Carbon Monoxide (CO) Basics
  • Setting & Reviewing CO Outdoor Air Standards
  • CO Standard Regulatory Actions
  • Implementing CO Outdoor Air Standards
  • Implementation Data and Reports
  • Other Criteria Air Pollutants
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 24, 2025
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