Particulate Matter NAAQS Review - Analyses and Data Sets
The Clean Air Act requires EPA to set national air quality standards for particulate matter and five other pollutants considered harmful to public health and the environment (the other pollutants are carbon monoxide, lead, nitrogen oxides, ozone and sulfur dioxide). The law also requires EPA to periodically review the standards to ensure that they provide adequate health and environmental protection, and to update those standards as necessary. Learn more about this process
Contact: Brett Gantt
gantt.brett@epa.gov
(919) 541-5274
On this page:
- Overview of Particulate Matter (PM) Air Quality in the U.S.
- Updated Analyses and Data Sets from Review Completed in 2020
- Analyses and Data Sets from Review Completed in 2020
- Analyses and Data Sets from Review Completed in 2012
- Analyses and Data Sets from Review Completed in 2006
- Related Links
Overview of Particulate Matter (PM) Air Quality in the U.S.
The documents in this section present an overview of the current state of PM air quality in the U.S. based on recent air pollutant emissions and air quality monitoring data.
- Overview of Particulate Matter (PM) Air Quality in the United States, based on data through 2023 (pdf)
- Overview of Particulate Matter (PM) Air Quality in the United States, based on data through 2022 (pdf)
- Overview of Particulate Matter (PM) Air Quality in the United States, based on data through 2021 (pdf) (20.98 MB)
Updated Analyses and Data Sets from Review Completed in 2020
- Comparison between PM mass concentrations and calculated light extinction
- Comparison between CBSA maximum and CBSA average design values
- PM2.5 design values for 2017-2019
- Annual average, 98th percentile, and second highest concentrations for PM2.5, PM10, PM10-2.5, and PM2.5 speciation for 2000-2019
- Daily PM2.5, PM10-2.5, and PM2.5 speciation concentrations for 2017-2019
- Hourly PM2.5 concentrations for 2017-2019
- Particle number concentration at Bondville, IL from 2000-2019 (zip)
Analyses and Data Sets from Review Completed in 2020
- Gridded PM2.5 concentration estimates for each 12 km grid cell within the 47 urban study areas that were used in BenMAP risk calculations (zip)
- Downscaler, “HU2017”, “DI2016”, and “VD2019” gridded fields of annual average PM2.5 concentration over the conterminous US for 2011 in rdata format (zip)
- Comparison between PM mass concentrations and calculated light extinction
- Comparison between CBSA maximum and CBSA average design values
- Annual average, 98th percentile, and second highest concentrations for PM2.5, PM10, PM10-2.5, and PM2.5 speciation for 2000-2017
- Daily PM2.5, PM10-2.5, and PM2.5 speciation concentrations for 2015-2017
- Hourly PM2.5 concentrations for 2015-2017
- Particle number concentration at Bondville, IL from 2000-2017 (zip)
- Near-road Monitoring Network Site List, May 2017 (xlsx) **See https://www3.epa.gov/ttnamti1/files/nearroad/near-road-site-list.xlsx for an up-to-date list of the near-road sites**
- Canadian PM2.5 annual concentrations, 1995-2016 (xlsx)
- Canadian PM2.5 98th percentiles, 1995-2016 (xlsx)
- County PM2.5 annual design values, 1999-2017 (xlsx)
- County PM2.5 24hr design values, 1999-2017 (xlsx)
Analyses and Data Sets from Review Completed in 2012
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Visibility data used to evaluate the relationship between: 1) the daily daylight- hours maximum 4-hour average visibility index (and total Bext) versus 2) the same site-day visibility index (and total Bext) (xlsx)
- These data were used in analysis supporting findings in the technical memo Re-analysis of the relationship between 24-hour and 4-hour visibility index levels, Frank N; Schmidt M (2012).
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Visibility Index (VI) design value estimates (by site) and daily VI estimates with component detail (by site-day) for 2009-2011 (xlsx)
and
Visibility Index (VI) design value estimates (by site) and daily VI estimates with component detail (by site-day) updated 2008-2010 (xlsx)
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- These data were used in analysis supporting findings in the technical memo Updated comparison of 24-hour PM2.5 design values and visibility index design values, Kelly J; Schmidt M; Frank N (2012b).
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Comparison of annual mean concentrations in selected long-term exposure studies for original study time frame versus an extended study time frame (xlsx)
- These data were used in analysis supporting findings in the technical memo Sensitivity Analysis of Long-term Mean PM2.5 Concentrations for Selected Long-term Exposure Epidemiological Studies, Schmidt M (2012a).
- U.S. gridded database of relative humidity (RH) inflation factors (FRHs) for use in Visibility Index (VI) design value calculations and intermediate Calculated Light Extinction computations (xlsx)
- 2008-2010 Visibility Index (VI) design value estimates (by site) and daily VI estimates with component detail (by site-day) (xlsx)
- Assessment of PM2.5 FEMs Compared to Collocated FRMs (April 7, 2011)
- Corrected Urban-Focused Visibility Assessment Data File (zip)
- Corrections to Relative Humidity Values Used in the Draft UFVA, Corrected Graphics, Tables, and Availability of Detailed Data File for Current Conditions, Lorang 11/10/09 memo
- Urban-Focused Visibility Assessment Data File (zip)
- Quantitative Health Risk Assessment for Particular Matter - Air Quality Data Files (for proportional and locally-focused rollback-based analyses) (zip)
- Quantitative Health Risk Assessment for Particular Matter - Air Quality Data Files (for hybrid rollback-based analyses) (zip)
Analyses and Data Sets from Review Completed in 2006
- Draft Analyses of Particulate Matter (PM) Data for the PM NAAQS Review (1/31/2005)
- Analyses of 2000-2002 PM Data for the PM NAAQS Review
- Analyses of 1999 PM Data for the PM NAAQS Review
Related Links
View primary technical information on Particulate Matter NAAQS Review
View general public information on air quality standards, trends, health effects, and programs to reduce Particulate Matter