EPA Ozone Design Values
2023-2025 design-value period; finalized June 8, 2026- Data
- EPA's finalized site-level report for the 2015 8-hour ozone standard, including 2023-2025 design values, annual fourth-highest daily maximum concentrations, site coordinates, data completeness, and validity status.
- What it tells us
- Blends up to three monitoring sites near each named community's representative point. Incomplete, distant, state, and national evidence is explicitly pulled toward neutral; this is not a parcel-level exposure or regulatory-attainment determination.