Section 390.TABLE F Heat Index Table/Apparent
Temperature
Air Temperature
(degree Fahrenheit)
(Relative
Humidity Percent)
|
|
70
|
75
|
80
|
85
|
90
|
95
|
100
|
105
|
110
|
115
|
120
|
125
|
130
|
135
|
5
|
64
|
69
|
74
|
79
|
84
|
88
|
93
|
97
|
102
|
107
|
111
|
116
|
122
|
128
|
10
|
65
|
70
|
75
|
80
|
85
|
90
|
95
|
100
|
105
|
111
|
116
|
123
|
131
|
|
15
|
65
|
71
|
76
|
81
|
86
|
91
|
97
|
102
|
108
|
115
|
123
|
131
|
|
|
20
|
66
|
72
|
77
|
82
|
87
|
93
|
99
|
105
|
112
|
120
|
130
|
141
|
|
|
25
|
66
|
72
|
77
|
83
|
88
|
94
|
101
|
109
|
117
|
127
|
139
|
|
|
|
30
|
67
|
73
|
78
|
84
|
90
|
96
|
104
|
113
|
123
|
135
|
148
|
|
|
|
35
|
67
|
73
|
79
|
85
|
91
|
98
|
107
|
118
|
130
|
143
|
|
|
|
|
40
|
68
|
74
|
79
|
86
|
93
|
101
|
110
|
123
|
137
|
151
|
|
|
|
|
45
|
68
|
74
|
80
|
87
|
95
|
104
|
115
|
129
|
143
|
|
|
|
|
|
50
|
69
|
75
|
81
|
88
|
96
|
107
|
120
|
135
|
150
|
|
|
|
|
|
55
|
69
|
75
|
81
|
89
|
98
|
110
|
126
|
142
|
|
|
|
|
|
|
60
|
70
|
76
|
82
|
90
|
100
|
114
|
132
|
149
|
|
|
|
|
|
|
65
|
70
|
76
|
83
|
91
|
102
|
119
|
138
|
|
|
|
|
|
|
|
70
|
70
|
77
|
85
|
93
|
106
|
124
|
144
|
|
|
|
|
|
|
|
75
|
70
|
77
|
86
|
95
|
109
|
130
|
|
|
|
|
|
|
|
|
80
|
71
|
78
|
86
|
97
|
113
|
136
|
|
|
|
|
|
|
|
|
85
|
71
|
78
|
87
|
99
|
117
|
|
|
|
|
|
|
|
|
|
90
|
71
|
79
|
88
|
102
|
122
|
|
|
|
|
|
|
|
|
|
95
|
71
|
79
|
89
|
105
|
|
|
|
|
|
|
|
|
|
|
(Source: Amended at 22 Ill.
Reg. 7188, effective April 15, 1998)