The first two data tables compare ozone concentrations for 2012 – 2014 with levels when areas were designated for the 1997 and 2008 standards.
This last set of data tables shows 2012 – 2014 ozone concentrations in comparison to the 2015 standards and then compares the 2015 standards to projected ozone concentrations in 2025.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Design Values in Areas Originally Designated Nonattainment for the 1997 8‐Hour Ozone NAAQS (PDF)(3 pp, 92 K)
- Design Values in Areas Originally Designated Nonattainment for the 2008 8‐Hour Ozone NAAQS (PDF)(2 pp, 88 K)
- County‐level Design Values for the 2015 Ozone Standards (PDF)(17 pp, 117 K)
- Counties Projected to Violate the 2015 Primary Ground‐Level Ozone Standard (PDF)(16 pp, 113 K)