April 25, 2025

AQS Reference Table

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To sort on a column, click the column header. That column will be (subtly) highlighted. Particularly useful is the search box at the top of the table on the right. Separate mulitiple search terms with a space. Search looks across all columns in the table.

Downoad a csv version: networks.csv

Network Code	Network
BORDER GRANT	Network of monitors funded by EPA Border Grants
CASTNET	Clean Air Status and Trends Network Stations
CSN STN	Trends Speciation Stations
CSN SUPPLEMENTAL	Supplemental Speciation Stations
IMPROVE	Interagency Monitoring of Protected Visual Environments
NATTS	National Air Toxics Trends Stations
NCORE	National Core (NCore) Multi-pollutant Monitoring Stations
NEAR ROAD	Monitors at sites meeting the near road design as per Part 58.
PAMS	Photochemical Assessment Monitoring Stations
PROPOSED NCORE	Proposed National Core (NCore) Multi-pollutant Monitoring Stations
PSD	Prevention of Significant Deterioration
SCHOOL AIR TOXICS	School Air Toxics Stations
UNOFFICIAL PAMS	Unofficial Photochemical Assessment Monitoring Stations
VOL SCHOOL AT	Voluntary School Air Toxics Stations