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 Adobe Reader to view 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)