Virginia
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High Ozone Days Particle Pollution Groups At Risk  
County
Grade
Wgt.
Avg.
Orange
Days
Red
Days
Purple
Days
Alexandria City D 3.0 6 2 0
Arlington F 4.7 14 0 0
Bristol City - - - - -
Caroline D 2.7 8 0 0
Charles City D 2.3 7 0 0
Chesterfield C 1.2 2 1 0
Fairfax F 10.8 26 3 1
Fauquier C 1.3 4 0 0
Frederick B 0.7 2 0 0
Hampton City B 0.3 1 0 0
Hanover C 1.7 5 0 0
Henrico D 2.3 7 0 0
Loudoun C 1.5 3 1 0
Lynchburg City - - - - -
Madison B 0.3 1 0 0
Norfolk City - - - - -
Page A 0.0 0 0 0
Prince William C 1.7 5 0 0
Richmond City - - - - -
Roanoke A 0.0 0 0 0
Roanoke City - - - - -
Rockbridge A 0.0 0 0 0
Salem City - - - - -
Stafford D 2.7 5 2 0
Suffolk City C 1.3 4 0 0
Virginia Beach City - - - - -
Wythe A 0.0 0 0 0
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American Lung Association State of the Air: 2008 NOTES

(1) * indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis.
(2) A dash (-) indicates that there is no monitor collecting data in the county.

More about Methodology.