Ford, BonneO'Dell, KatelynPierce, Jeffrey R.Fischer, Emily V.2021-10-212021-10-212021https://hdl.handle.net/10217/233962http://doi.org/10.25675/10217/233962http://dx.doi.org/10.25675/10217/233962US Environmental Protection Agency. Air Quality System Data Mart [internet database] available at http://www.epa.gov/ttn/airs/aqsdatamart. Accessed June 20, 2019.Dataset produced using code written by Katelyn O'Dell for https://doi.org/10.25675/10217/230602/This dataset contains spatially interpolated daily PM2.5 concentrations observed by monitors in the Environmental Protection Agency's Air Quality System and non-smoke seasonal background PM2.5 estimates as in https://doi.org/10.25675/10217/230602 but extended for 2019-2020. See the readme file for details on data processing and recommended usage.Department of Atmospheric ScienceThis dataset contains spatially interpolated daily PM2.5 concentrations observed by monitors in the Environmental Protection Agency's Air Quality System and non-smoke seasonal background PM2.5 estimates for 2019-2020. It is a continuation of the previous dataset: https://doi.org/10.25675/10217/230602.ZIPTXTNetCDFPDFShapefileengDataset