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    • National Emission Inventory

    Metadata Updated: February 10, 2026

    The National Emission Inventory contains measured, modeled, and estimated data for emissions of all known source categories in the US (stationary sources, fires, light duty vehicles and trucks, Heavy duty engines, Motorcycles, ATVs, non-road engines and equipment, locomotives, aircraft, and marine vessels). The statutory authority leading to the collection of this information comes from Title II, Part A of the Clean Air Act.Substance classes include CAPs, HAPs, and some GHG data.Data included in the National Emission Inventory is collected annually, Air Pollutant Trends Data is made available annually, and an National Emissions Inventory of air emissions of both Criteria and Hazardous air pollutants from all air emissions sources is prepared every three years.

    Access & Use Information

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

    Downloads & Resources

    No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.

    References

    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B1F3A34AC-1EA3-4E93-95EC-375E559C31A7%7D
    https://edg.epa.gov/metadata/rest/document?id=%7B1F3A34AC-1EA3-4E93-95EC-375E559C31A7%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 Air Quality Planning and Standards (OAQPS)
    Maintainer
    Identifier {1F3A34AC-1EA3-4E93-95EC-375E559C31A7}
    Data First Published 2014-01-01
    Language en-US
    Data Last Modified 2015-09-23
    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 5e32fee8-2402-4836-ad84-af55dddbd726
    Harvest Source Id 9c1c2b5b-7925-4ca2-a663-ca2131653db1
    Harvest Source Title EPA Non Geo Repository
    License https://edg.epa.gov/EPA_Data_License.html
    Old Spatial -180.0,-90.0,180.0,90.0
    Program Code 020:072
    Related Documents https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B1F3A34AC-1EA3-4E93-95EC-375E559C31A7%7D, https://edg.epa.gov/metadata/rest/document?id=%7B1F3A34AC-1EA3-4E93-95EC-375E559C31A7%7D
    Source Datajson Identifier True
    Source Hash c783271eebaa59597b0b73d4c160423adeba9d39735a506f21717b7d93b7fc48
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0, -90.0, -180.0, 90.0, 180.0, 90.0, 180.0, -90.0, -180.0, -90.0}

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