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National Air Quality: Status and Trends of Key Air Pollutants

  • Interactive Report

    Explore air quality trends interactively with Our Nation's Air: Status and Trends Through 2020

Air Quality Trends

  • Carbon Monoxide
  • Lead
  • Nitrogen Dioxide
  • Ozone
  • Particulate Matter (PM10)
  • Particulate Matter (PM2.5)
  • Sulfur Dioxide

Reports and Summaries

  • Interactive Report - Our Nation's Air:
    Status and Trends Through 2020
  • Previous Air Quality Trends Reports
  • AQI Trends - Ozone
  • AQI Trends - PM2.5
  • AQI Trends - Combined Ozone/PM2.5
  • Air Quality - National Summary
  • Air Quality - Cities and Counties
  • Air Quality Design Values
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Last updated on October 6, 2021