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    • Clean Air Status and Trends Network (CASTNET): Ozone

    Metadata Updated: February 10, 2026

    8-hour daily maximum ozone concentrations as measured by the Clean Air Status and Trends Network (CASTNET)

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    References

    https://edg.epa.gov/metadata/rest/document?id=%7B0192864F-9853-4192-96DE-00ED84376BA1%7D
    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B0192864F-9853-4192-96DE-00ED84376BA1%7D

    Dates

    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Data Update Frequency irregular

    Metadata Source

    Harvested from EPA Non Geo Repository

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Publisher U.S. EPA Office of Air and Radiation (OAR) - Office of Atmospheric Programs (OAP)
    Maintainer
    Identifier 0192864F-9853-4192-96DE-00ED84376BA1
    Data First Published 2014-01-01
    Data Last Modified 2014-01-01
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 020:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://edg.epa.gov/data/nongeo_data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id fee5ebf9-0fa0-4eec-a23c-36652d969ceb
    Harvest Source Id 9c1c2b5b-7925-4ca2-a663-ca2131653db1
    Harvest Source Title EPA Non Geo Repository
    License https://edg.epa.gov/EPA_Data_License.htm
    Old Spatial -180.0,18.0,-66.0,72.0
    Program Code 020:072
    Related Documents https://edg.epa.gov/metadata/rest/document?id=%7B0192864F-9853-4192-96DE-00ED84376BA1%7D, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B0192864F-9853-4192-96DE-00ED84376BA1%7D
    Source Datajson Identifier True
    Source Hash ac545b5cdc5020b26d09ad6143d248180abc3ebfed5cb84b3a411c719bfceb75
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0, 18.0, -180.0, 72.0, -66.0, 72.0, -66.0, 18.0, -180.0, 18.0}

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