Virginia air pollution stats

County	First data available	Last data available
Alexandria city	1997	2007
Arlington Co	1997	2007
Bristol city	1997	2007
Caroline Co	1997	2007
Carroll Co	1997	2007
Charles City Co	1997	2007
Charlottesville city	1997	2007
Chesapeake city	1997	2004
Chesterfield Co	1997	2007
Covington city	1997	1998
Culpeper Co	1997	2007
Fairfax Co	1997	2007
Fauquier Co	1997	2007
Frederick Co	1997	2007
Fredericksburg city	1997	2007
Hampton city	1997	2007
Hanover Co	1997	2007
Henrico Co	1997	2007
Henry Co	1997	1997
Hopewell city	2006	2007
King William Co	1997	2007
Loudoun Co	1997	2007
Lynchburg city	1997	2007
Madison Co	1997	2007
Martinsville city	1997	1998
Newport News city	1997	2003
Norfolk city	1997	2007
Northumberland Co	1997	2003
Page Co	1999	2007
Prince William Co	1997	2007
Richmond city	1997	2007
Roanoke city	1997	2007
Roanoke Co	1997	2007
Rockbridge Co	1999	2007
Rockingham Co	1997	2007
Salem city	1999	2006
Smyth Co	1997	1997
Stafford Co	1997	2007
Suffolk city	1997	2007
Tazewell Co	1997	1999
Warren Co	1997	2007
Winchester city	1997	2007
Virginia Beach city	1999	2007
Wise Co	1997	2000
Wythe Co	1997	2007