Sulfur Dioxide NAAQS Review - Analyses and Data Sets
The Clean Air Act requires EPA to set national air quality standards for sulfur dioxide and five other pollutants considered harmful to public health and the environment (the other pollutants are carbon monoxide, lead, nitrogen oxides, ozone and particulate matter). 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: David Mintz
mintz.david@epa.gov
(919) 541-5224
- Overview of Sulfur Dioxide (SO2) Air Quality in the U.S.
- Analyses and Data Sets from Review Completed in 2019
- Analyses and Data Sets from Review Completed in 2010
- Related Links
Overview of Sulfur Dioxide (SO2) Air Quality in the U.S.
The documents in this section present an overview of the current state of SO2 air quality in the U.S. based on recent air pollutant emissions and air quality monitoring data.
- Overview of Sulfur Dioxide (SO2) Air Quality in the United States, based on data through 2023 (pdf)
- Overview of Sulfur Dioxide (SO2) Air Quality in the United States, based on data through 2022 (pdf)
- Overview of Sulfur Dioxide (SO2) Air Quality in the United States, based on data through 2021 (pdf) (3.48 MB)
Analyses and Data Sets from Review Completed in 2019
Analyses and Data Sets from Review Completed in 2010
- AQS SO2 Data (5-minute values) 1999-2007 (zip)
- AQS SO2 Data (Hourly max 5-minute values) 1988-2007 (zip)
- Author-supplied electronic data sets
Related Links
View primary technical information on Sulfur Dioxide NAAQS Review
View general public information on air quality standards, trends, health effects, and programs to reduce Sulfur Dioxide