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  2. Air Trends

Air Quality - Cities and Counties

The following spreadsheets provide air quality status and trends for counties and cities, defined as CBSAs (Core-Based Statistical Areas), with monitoring data.  These tables are based on data from EPA's AQS (Air Quality System) database as of May 2, 2023.  Annual summary statistics are also available on EPA's AirData website from the Air Quality Statistics Report. 

  • Air Quality Statistics by County, 2023 (xlsx) (96.06 KB, 8/16/2024)
  • Air Quality Statistics by City, 2023 (xlsx) (56.02 KB, 8/16/2024)
  • Air Quality Statistics by City, 2000-2023 (xlsx) (164.93 KB, 8/16/2024)
  • Air Quality Statistics by City, 1990-2023 (xlsx) (157.63 KB, 8/16/2024)

Air Trends

  • Air Quality - National Summary
  • Air Quality - Cities and Counties
  • Air Quality Design Values
  • Previous Air Quality Trends Reports
  • Carbon Monoxide Trends
  • Lead Trends
  • Nitrogen Dioxide Trends
  • Ozone Trends
  • Particulate Matter (PM10) Trends
  • Particulate Matter (PM2.5) Trends
  • Sulfur Dioxide Trends
Contact Us About Air Trends
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 16, 2024
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