Nitrogen Dioxide Designations
|On January 20, 2012 EPA designated all areas of the country as “unclassifiable/attainment” for the 2010 NO2 NAAQS. The available air quality data show that all monitored areas in the country meet the 2010 NO2 NAAQS for 2008-2010. No state or tribe recommended an area be designated “nonattainment.”
State information is presented below.
Tribal information is available on the Tribal Recommendations page.
The following map groups the states by their associated EPA regional
office. Click on a region in the map or list below to view recommendations
submitted to EPA by the states or tribes within that region.
Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont and
Region 2: New Jersey, New York, Puerto Rico, US Virgin Islands and Tribal Nations
Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia
Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee and Tribal Nations
Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin and Tribal Nations
Region 6: Louisiana, Arkansas, Oklahoma, New Mexico, Texas and Tribal Nations
Region 7: Iowa, Kansas, Missouri, Nebraska, and Tribal Nations
Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming and Tribal Nations
Region 9: Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations
Region 10: Alaska, Idaho, Oregon, Washington and Tribal Nations