National Ambient Air Quality Standards Implementation Act of 2023

S 2125 amends the Clean Air Act to change how the EPA establishes and reviews national air quality standards. It extends the review cycle for these standards from 5 to 10 years, sets specific deadlines (December 2030) for reviewing ozone and particulate matter standards, and requires the EPA to consider technological feasibility and economic impacts when setting standards. The bill also creates "Extreme Areas" for ozone nonattainment zones, exempting them from certain cleanup requirements, and mandates that EPA publish implementation guidance alongside new standards to help states and industries obtain permits for new facilities. Additionally, it requires the EPA to report on how foreign pollution affects U.S. air quality designations and the handling of interstate pollution petitions.