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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov. See Terms

    Local Air Quality

    Metadata Updated: January 31, 2025

    This dataset contains air quality data collected using a PurpleAir Dual Laser Air Quality Sensor located at the Chapel Hill Public Library. The sensor measures fine airborne particulate matter with a diameter of 2.5 microns (PM 2.5) or less. PLEASE NOTE: We are currently experiencing technical issues with our air quality monitoring sensor. Repair efforts are under way, but reported values may not be accurate until full function is restored.In addition to PM 2.5 measurements, this dataset includes readings for pressure, temperature and humidity. Because the PurpleAir sensor is designed primarily for measuring airborne particulate matter and not for ideal temperature sensing, temperature values are provided as is and are just for interest.For more information on the PurpleAir Dual Laser Air Quality Sensor, visit: https://www.purpleair.com/For general information on airborne particulate matter and interpreting PM 2.5 readings, visit: https://www.epa.gov/pm-pollution/particulate-matter-pm-basics

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. See Terms License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date January 24, 2023
    Metadata Updated Date January 31, 2025

    Metadata Source

    Harvested from Chapel Hill Open Data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 24, 2023
    Metadata Updated Date January 31, 2025
    Publisher Town of Chapel Hill
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=86e27b556a864242980e2029cec60fb2&sublayer=0
    Data First Published 2020-06-29T18:04:38.000Z
    Data Last Modified 2020-06-29T18:04:41.993Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 e4308f89-5301-49d6-9a02-4627dbd1e74d
    Harvest Source Id 8046ced8-8d85-4a5f-9de9-c32b3e68eae7
    Harvest Source Title Chapel Hill Open Data
    Homepage URL https://opendata-townofchapelhill.hub.arcgis.com/datasets/townofchapelhill::local-air-quality
    License https://opendatacommons.org/licenses/odbl/summary
    Metadata Type geospatial
    Old Spatial -79.0357,35.9325,-79.0357,35.9325
    Source Datajson Identifier True
    Source Hash 507842f939d39ae76580c22de1bd2cba7a9cefef8d9fd6a162a0d34717ed7189
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -79.0357, 35.9325, -79.0357, 35.9325, -79.0357, 35.9325, -79.0357, 35.9325, -79.0357, 35.9325}

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