Email: Carolyn Stevens

Eight-hour ozone exceedences (2005)

Dates and locations in Virginia where air quality monitors recorded ozone concentrations greater than 84 parts per billion, the health-based air quality standard measured over eight hours.

Numbers indicate ozone concentration in parts per billion. All information is unofficial until quality-assured by the DEQ Office of Air Monitoring.

Richmond area

Charles City County
- 7/26: 91 PPB
- 8/2: 95 PPB
- 8/5: 85 PPB
Chesterfield County
- 8/4: 105 PPB
Hanover County
- 8/5: 93 PPB
- 8/12: 89 PPB
Henrico County
- 6/24: 87 PPB
- 8/2: 89 PPB
- 8/5: 95 PPB

Hampton Roads

Hampton
Suffolk (Holland)
Suffolk (Tidewater Community College)
- 8/4: 86 PPB

Roanoke Area

Roanoke County

Valley area

Frederick County
Page County
Rockbridge County
Shenandoah National Park

Southwestern Virginia

Wythe County

Northern Virginia

Alexandria
- 8/4: 89 PPB
- 8/5: 86 PPB
Arlington County
- 7/1: 86 PPB
- 7/26: 90 PPB
- 8/4: 90 PPB
- 8/5: 94 PPB
- 8/11: 88 PPB
Caroline County
- 8/4: 93 PPB
- 9/9: 90 PPB
Fairfax County (Annandale)
- 7/26: 85 PPB
- 8/4: 97 PPB
- 8/5: 93 PPB
- 8/11: 89 PPB
Fairfax County (Chantilly)
Fairfax County (Franconia)
- 8/3: 85 PPB
- 8/4: 95 PPB
- 8/5: 88 PPB
- 8/6: 88 PPB
- 8/11: 92 PPB
- 9/12: 86 PPB
Fairfax County (McLean)
- 7/12: 93 PPB
- 8/5: 93 PPB
Fairfax County (Mount Vernon)
- 6/30: 91 PPB
- 7/1: 86 PPB
- 7/22: 94 PPB
- 7/26: 87 PPB
- 8/4: 92 PPB
- 8/5: 93 PPB
- 8/11: 86 PPB
- 8/12: 86 PPB
Fauquier County
Loudoun County
Prince William County
Stafford County