Nitrogen Dioxide 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 ozone, nitrogen oxides, carbon monoxide, sulfur dioxide and lead). 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
Analyses and Data Sets from Current Review
As analyses are completed, they will be posted here along with source data.
View primary technical information on Nitrogen Dioxide NAAQS Review
View general public information on air quality standards, trends, health effects, and programs to reduce Nitrogen Dioxide