Regional Air Quality Data

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 09, 2025 | Last Modified: 2014-01-01

This asset provides data on regional air quality, including trace level SO2, nitric acid, ozone, carbon monoxide, and NOy; and particulate sulfate, nitrate, and ammonium from 1989 to present. Precipitation and meteorology are provided from 1989 to 2011.

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Complete Metadata

bureauCode	[ "020:00" ]
dataQuality	false
identifier	DE68A445-C389-4C5C-AAC7-D15395BC12D1
issued	2014-01-01
landingPage	https://www.epa.gov/castnet
language	[ "en-US" ]
programCode	[ "020:094" ]
references	[ "https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BDE68A445-C389-4C5C-AAC7-D15395BC12D1%7D", "https://edg.epa.gov/metadata/rest/document?id=%7BDE68A445-C389-4C5C-AAC7-D15395BC12D1%7D" ]
spatial	-180.0,18.0,-66.0,72.0

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