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Particulate Matter (PM) Standards

The Clean Air Act requires EPA to set national ambient air quality standards (NAAQS) for particulate matter and five other pollutants considered harmful to public health and the environment (the other pollutants are ozone, nitrogen oxides, carbon monoxide, sulfur dioxide and lead). The law also requires EPA to periodically review the standards to ensure that they provide adequate health and environmental protection, and to update those standards as necessary. Learn more about the NAAQS review process.

Contact:

Beth Hassett-Sipple Hassett-Sipple.Beth@epa.gov 919-541-4605

Documents from Current Review

• Planning Documents
• Integrated Science Assessments
• Risk and Exposure Assessments
• Policy Assessments
• Other Technical Documents
• CASAC Documents
• Federal Register Notices
• Response to Comments Document
• Regulatory Impact Analysis
• Litigation

Basic Information on Particulate Matter

Documents from Review Completed in 2006

Documents from Review Completed in 1997

Table of Current NAAQS

Table of Historical PM NAAQS

Air Quality Index

 

File Utilities

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• NAAQS Home
  
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• Carbon Monoxide Implementation
  
• Lead Standards
• Lead Implementation
  
• Nitrogen Dioxide Primary Standards
• Nitrogen Dioxide Secondary Standards
• Nitrogen Dioxide Implementation
  
• Ozone Standards
• Ozone Implementation
  
• Particulate Matter Standards
• PM₁₀ Implementation
• PM_2.5 Implementation
  
• Sulfur Dioxide Primary Standards
• Sulfur Dioxide Secondary Standards
• Sulfur Dioxide Implementation
  

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