The report below displays data on the total number of days in Pennsylvania 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
Allentown-Bethlehem-Easton
Harrisburg-Lebanon-Carlisle
Philadelphia
Pittsburgh
Scranton-Wilkes Barre-Hazleton
1990
22
19
57
27
16
1991
28
36
77
36
34
1992
6
11
40
12
8
1993
16
28
75
28
28
1994
10
28
48
35
19
1995
18
28
54
36
25
1996
19
17
41
30
14
1997
22
21
41
32
19
1998
39
37
61
47
26
1999
31
31
51
50
25
2000
18
17
37
40
8
2001
34
42
51
56
24
2002
38
35
59
59
30
2003
13
13
34
42
7
2004
13
8
20
40
4
2005
16
19
35
54
12
2006
10
13
30
41
3
2007
12
19
40
44
7
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.
