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DATA EXPORT - VALIDATED DATA
Data files in Comma Delimited Format (CSV) are available here.
Three file formats are available:
Date/Times in rows and Sites/Parameters in columns.
Sites/Local Date Time/UTC in rows and Parameters in columns.
Sites/Local Date Time/Parameters in rows and hours in columns (hourly data only)
Please note that you must allow Pop-ups to sucessfully use this feature. If your query results in more than 65,536 rows the download file will be compressed. Queries resulting in more than 300,000 rows are not allowed. For large data requests, please
contact us.
Select Dates
Select start and end dates then click the continue button. The earliest date is January 1980.
Output Format:
Date/times in rows and sites/parameters in columns
Site/Date/times with UTC in rows and parameters in columns
Sites/dates/parameters in rows and hours in columns (hourly data only)
Start Date:
End Date:
Retrieving sites
Air Resource Specialists, Inc. (ARS) is contracted by the National Park Service Air Resources Division to provide documentation for the Gaseous Pollutant Monitoring Program (GPMP) via this website. This website and the information it contains are provided as a public service by ARS. This system is monitored to ensure proper operation, to verify the functioning of applicable security features, and for comparable purposes. Anyone using this system expressly consents to such monitoring. Unauthorized attempts to modify any information stored on this system, to defeat or circumvent security features, or to utilize this system for other than its intended purposes are prohibited and may result in criminal prosecution.