Description
EPA website providing access to the 2022 Ambient Monitoring Archive (AMA) for the Hazardous Air Pollutants (HAPs) (i.e., “the Archive”) that houses over 115 million data records from over 6,000 monitoring sites from 1990 through 2022.
Questions this resource can help answer
What are historical trends in air toxics in or near my city?
How do I use this resource?
The AMTIC website provides a set of downloadable data files in MS Access and .CSV formats. Data is available by year for all locations, or by state for all years. A full datafile with all locations and years is also downloadable as a .Rda file (generated by the R programming language). A summary file with annual statistics by pollutant, site, and year is also downloadable as a MS Excel file. Documentation and supporting files are also available.
Pro tips
There is a Qlik data retrieval tool, but it does not appear to be functioning, so you will need to download the files using the links in the tables.
Resource information
Technical specifications
Data come from EPA’s Air Quality System, the Texas Commission on Environmental Quality, the South Coast Air Quality Management District, the National Atmospheric Deposition Program, the National Oceanic and Atmospheric Administration, and the Massachusetts Institute of Technology, other state, local, tribal, and federal monitoring agencies, and other academic, community, and short-term studies.
