Washington, DC-MD-VA PM2.5 Nonattainment Area Map

"This map shows the boundaries of the designated Washington, DC-MD-VA PM2.5 nonattainment area. It includes the boundaries of associated 8-hour ozone nonattainment areas, as well as any associated MPOs. The map is intended to depict the extent of PM2.5 nonattainment in this area, and how the boundaries of the PM2.5 area, 8-hour area, and the MPO planning area relate to each other."

• Washington, DC-MD-VA PM2.5 Nonattainment Area
  • DISTRICT OF COLUMBIA
    • Entire District
  • MARYLAND
    • Charles Co
    • Frederick Co
    • Montgomery Co
    • Prince George's Co
  • VIRGINIA
    • Alexandria
    • Arlington Co
    • Fairfax
    • Fairfax Co
    • Falls Church
    • Loudoun Co
    • Manassas
    • Manassas Park
    • Prince William Co
• Washington, DC-MD-VA 8-hour Ozone Nonattainment Area
  • DISTRICT OF COLUMBIA
    • Entire District
  • MARYLAND
    • Calvert Co
    • Charles Co
    • Frederick Co
    • Montgomery Co
    • Prince George's Co
  • VIRGINIA
    • Alexandria
    • Arlington Co
    • Fairfax
    • Fairfax Co
    • Falls Church
    • Loudoun Co
    • Manassas
    • Manassas Park
    • Prince William Co
• National Capital Region Transportation Planning Board
  • DISTRICT OF COLUMBIA
    • Entire District
  • MARYLAND
    • Charles Co (P)
    • Frederick Co
    • Montgomery Co
    • Prince George's Co
  • VIRGINIA
    • Alexandria
    • Arlington Co
    • Fairfax
    • Fairfax Co
    • Falls Church
    • Loudoun Co
    • Manassas
    • Manassas Park
    • Prince William Co