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Air Quality System (AQS)

Published by U.S. EPA Office of Air and Radiation (OAR) - Office of Air Quality Planning and Standards (OAQPS) | U.S. Environmental Protection Agency | Metadata Last Checked: July 31, 2025 | Last Modified: 2014-01-01
The Air Quality System (AQS) database contains measurements of air pollutant concentrations from throughout the United States and its territories. The measurements include both criteria air pollutants and hazardous air pollutants.

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Complete Metadata

bureauCode 
[
  "020:00"
]
dataQuality false
identifier 39529785-E7E6-4C46-BE1A-FF37C4D099AA
issued 2014-01-01
landingPage https://www.epa.gov/aqs
language 
[
  "en-US"
]
programCode 
[
  "020:094"
]
references 
[
  "https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B39529785-E7E6-4C46-BE1A-FF37C4D099AA%7D",
  "https://edg.epa.gov/metadata/rest/document?id=%7B39529785-E7E6-4C46-BE1A-FF37C4D099AA%7D"
]
spatial -180.0,18.0,-66.0,72.0

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