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    • Collocated PurpleAir Sensors and T640 Reference Data located at Durango Complex in Phoenix, AZ May 2019: Case Study Demonstrating EPA's Performance Targets and sensorstoolkit Python Code Library

    Metadata Updated: September 16, 2025

    Three PurpleAir sensors were collocated with a T640x reference monitor at the Durango Complex Air Quality Monitoring Station in Phoenix, Arizona in May 2019. Both instruments measured PM2.5 and PM10 and this collocation exercise was done to better understand how the sensor data compared to the reference data and what data cleaning and correcting would need to be applied to the sensor data to make these two dataset more comparable. These data files contain the raw data from this experiment at 1 minute and 20 second time resolution for the sensor data and 1 hour time resolution for the reference monitor data. Data provided courtesy of USEPA and our project partners Maricopa County Air Quality Department.

    This dataset is associated with the following publication: Kumar, M., S. Frederick, K. Barkjohn, and A. Clements. Sensortoolkit—A Python Library for Standardizing the Ingestion, Analysis, and Reporting of Air Sensor Data for Performance Evaluation. Sensors. MDPI, Basel, SWITZERLAND, 25(18): 5645, (2025).

    Access & Use Information

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

    Downloads & Resources

    References

    https://doi.org/10.3390/s25185645

    Dates

    Metadata Created Date September 16, 2025
    Metadata Updated Date September 16, 2025

    Metadata Source

    Harvested from EPA ScienceHub

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 16, 2025
    Metadata Updated Date September 16, 2025
    Publisher U.S. EPA Office of Research and Development (ORD)
    Maintainer
    Identifier https://doi.org/10.23719/1531904
    Data Last Modified 2024-12-12
    Public Access Level public
    Bureau Code 020:00
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Data Dictionary https://pasteur.epa.gov/uploads/10.23719/1531904/documents/CombinedDataDictonary.xlsx
    Data Dictionary Type application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
    Harvest Object Id f23e38e3-94f6-4394-b051-642834641920
    Harvest Source Id 04b59eaf-ae53-4066-93db-80f2ed0df446
    Harvest Source Title EPA ScienceHub
    License https://pasteur.epa.gov/license/sciencehub-license.html
    Program Code 020:000
    Publisher Hierarchy U.S. Government > U.S. Environmental Protection Agency > U.S. EPA Office of Research and Development (ORD)
    Related Documents https://doi.org/10.3390/s25185645
    Source Datajson Identifier True
    Source Hash 6d42f59a8be24b20d78fb2e874154bb92acf9970529c7b15cd6ddd0805053ebe
    Source Schema Version 1.1

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