Welcome to the AirQA Website

The purpose of this website is to facilitate the transmission and processing of field data collected as part of U.S. EPA’s PM2.5 and Lead (Pb) National Monitoring Networks' Performance Evaluation Program (PEP). In addition the site will be used to provide program managers with summary reports to aid in their QA review of program data.

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Note: Access to this site is limited to only those EPA and state/local/tribal (SLT) Agency personnel who participate in the programs mentioned on the website and their supporting contractors. Official dissemination of QA data and related guidance documents and reports occurs through EPA's Air Quality System (AQS) and Ambient Monitoring Technology Information Center (AMTIC) on the Technology Transfer Network (TTN).