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    • 2018 Ozone Standard Exceedances in National Parks

    Metadata Updated: December 13, 2025

    Ozone exceedance data for national parks with on-site monitoring. This data set documents the number of days when the ozone standard was exceeded from April to October, 2018. The National Ambient Air Quality Standard for ozone in 2018 is 70 parts per billion (ppb), daily maximum 8-hour average ozone concentration. An exceedance day occurs on each calendar day when the daily maximum 8-hour average is greater than or equal to 71 ppb. Tabular data are available in an Excel document format.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date December 13, 2025
    Metadata Updated Date December 13, 2025

    Metadata Source

    Harvested from DOI NPS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 13, 2025
    Metadata Updated Date December 13, 2025
    Publisher National Park Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/nps-datastore-2253485
    Data First Published 2018-01-01T00:00:00Z
    Data Last Modified 2018-01-01T00:00:00Z
    Category Tabular Dataset
    Public Access Level public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/nps-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 daa39ed7-3021-4a43-a2f6-91a8bb7e2cd8
    Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
    Harvest Source Title DOI NPS DCAT-US
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2253485
    Program Code 010:119, 010:118
    Source Datajson Identifier True
    Source Hash 89874d222a30dabf27e0e2b5eaba36fe59793cf6654764c82d3041c0f6408304
    Source Schema Version 1.1

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