The report below displays data on the total number of days in Oklahoma 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
Oklahoma City
Tulsa
1990
14
27
1991
12
29
1992
7
7
1993
7
6
1994
21
26
1995
29
39
1996
10
23
1997
15
12
1998
35
24
1999
17
24
2000
16
21
2001
24
21
2002
10
22
2003
13
16
2004
6
1
2005
12
19
2006
31
24
2007
4
2
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.
