The report below displays data on the total number of days in Virginia with an Air Quality Index Value of
over 100. This data has been compiled from 1990-2007. Some states have multiple monitoring stations and each will be listed in the reports below.
Other states do not have any monitoring stations in which case we have selected the closest station available.
Year
Norfolk-Virginia Beach-Newport News
Richmond-Petersburg
WashingtonDC
1990
24
23
38
1991
29
36
69
1992
19
19
30
1993
41
48
63
1994
19
26
43
1995
22
28
54
1996
12
23
39
1997
37
40
51
1998
34
50
65
1999
32
39
61
2000
23
17
35
2001
14
24
41
2002
31
40
54
2003
10
14
21
2004
5
5
21
2005
12
23
36
2006
11
14
32
2007
9
19
38
According to the EPA, an Air Quality Index Value of over 100 presents some level of health concern. The higher the number, the
higher the level of concern. The EPA provides the following table and more information on Air Quality Index can be found at
WikiPedia.
