Email: Carolyn Stevens

Eight-hour ozone exceedences (2008)

Dates and locations in Virginia where air quality monitors recorded ozone concentrations greater than 75 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
- April 18, 2008: 82 PPB
- June 5, 2008: 78 PPB
- June 12, 2008: 89 PPB
- June 13, 2008: 85 PPB
- July 12, 2008: 84 PPB
- July 16, 2008: 81 PPB
- July 17, 2008: 89 PPB
- July 22, 2008: 76 PPB
- July 28, 2008: 82 PPB
- Aug 1, 2008: 82 PPB
- Aug 4, 2008: 77 PPB
Chesterfield County
- April 18, 2008: 79 PPB
- June 11, 2008: 77 PPB
- June 12, 2008: 99 PPB
- June 13, 2008: 76 PPB
- July 11, 2008: 89 PPB
- July 16, 2008: 80 PPB
- July 17, 2008: 97 PPB
Hanover County
- April 18, 2008: 80 PPB
- June 11, 2008: 83 PPB
- June 12, 2008: 78 PPB
- June 13, 2008: 89 PPB
- July 12, 2008: 76 PPB
- July 16, 2008: 76 PPB
- July 17, 2008: 81 PPB
- September 4, 2008: 80 PPB
Henrico County
- April 18, 2008: 80 PPB
- June 5, 2008: 95 PPB
- June 6, 2008: 110 PPB
- June 12, 2008: 82 PPB
- June 13, 2008: 86 PPB
- July 12, 2008: 77 PPB
- July 16, 2008: 80 PPB
- July 17, 2008: 87 PPB
- July 18, 2008: 80 PPB
- July 22, 2008: 78 PPB

Hampton Roads

Hampton
- April 18, 2008: 79 PPB
- June 11, 2008: 79 PPB
- June 12, 2008: 88 PPB
- July 17, 2008: 82 PPB
Suffolk (Holland)
- April 18, 2008: 78 PPB
- June 12, 2008: 95 PPB
- July 12, 2008: 89 PPB
- July 17, 2008: 95 PPB
Suffolk (Tidewater Community College)
- June 8, 2008: 77 PPB
- June 11, 2008: 78 PPB
- June 12, 2008: 85 PPB
- June 26, 2008: 77 PPB
- July 12, 2008: 76 PPB
- July 17, 2008: 79 PPB

Roanoke Area

Roanoke County
- April 18, 2008: 81 PPB

Valley Area

Frederick County
- July 17, 2008: 79 PPB
- July 29, 2008: 81 PPB
Page County
- n/a
Rockbridge County
- April 18, 2008: 77 PPB
Shenandoah National Park
- April 18, 2008: 81 PPB
- April 19, 2008: 80 PPB
- May 7, 2008: 77 PPB
- June 12, 2008: 79 PPB

Southwestern Virginia

Wythe County
- April 18, 2008: 76 PPB

Northern Virginia

Alexandria
- June 12, 2008: 77 PPB
- July 17, 2008: 90 PPB
- July 18, 2008: 77 PPB
Arlington County
- June 12, 2008: 93 PPB
- June 13, 2008: 79 PPB
- June 23, 2008: 76 PPB
- July 15, 2008: 81 PPB
- July 16, 2008: 84 PPB
- July 17, 2008: 104 PPB
- July 18, 2008: 89 PPB
Caroline County
- April 18, 2008: 77 PPB
- June 12, 2008: 76 PPB
- June 13, 2008: 90 PPB
- July 16, 2008: 85 PPB
- July 18, 2008: 80 PPB
- September 4, 2008: 81 PPB
Fairfax County (Annandale)
- June 5, 2008: 82 PPB
- June 11, 2008: 82 PPB
- June 12, 2008: 88 PPB
- June 13, 2008: 77 PPB
- June 23, 2008: 76 PPB
- July 16, 2008: 81 PPB
- July 17, 2008: 102 PPB
- July 18, 2008: 82 PPB
- July 29, 2008: 81 PPB
- September 4, 2008: 79 PPB
Fairfax County (Chantilly)
- June 12, 2008: 98 PPB
- June 13, 2008: 80 PPB
- July 16, 2008: 77 PPB
- July 17, 2008: 79 PPB
- July 29, 2008: 78 PPB
Fairfax County (Franconia)
- June 12, 2008: 85 PPB
- July 16, 2008: 88 PPB
- July 17, 2008: 95 PPB
- July 18, 2008: 78 PPB
- September 3, 2008: 85 PPB
- September 4, 2008: 77 PPB
Fairfax County (McLean)
- June 11, 2008: 76 PPB
- June 12, 2008: 102 PPB
- June 13, 2008: 80 PPB
- July 16, 2008: 78 PPB
- July 17, 2008: 90 PPB
- July 29, 2008: 81 PPB
Fairfax County (Mount Vernon)
- June 12, 2008: 84 PPB
- July 15, 2008: 85 PPB
- July 16, 2008: 92 PPB
- July 17, 2008: 95 PPB
- July 18, 2008: 84 PPB
- September 3, 2008: 83 PPB
- September 4, 2008: 77 PPB
Fauquier County
- April 18, 2008: 78 PPB
Loudoun County
- June 12, 2008: 100 PPB
- June 13, 2008: 79 PPB
- July 16, 2008: 79 PPB
- July 18, 2008: 78 PPB
- July 29, 2008: 89 PPB
- August 21, 2008: 80 PPB
- September 3, 2008: 79 PPB
Prince William County
- April 18, 2008: 76 PPB
- June 12, 2008: 82 PPB
Stafford County
- July 16, 2008: 85 PPB

Charlottesville Area

Albemarle County
- April 18, 2008: 78 PPB
- May 7, 2008: 77 PPB
- June 12, 2008: 82 PPB

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