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Heat Index Table
To find out what the Heat Index is where you are, round your
air temperature and the relative humidity to the nearest 5. Then find each of
those on the table and that will tell you what the Heat Index is. If your Heat
Index is above 90°, you could be at risk for Heat Stroke.
HEAT INDEX |
Affects to the human
body |
130° or
above |
Heat Stroke highly likely
with continued exposure |
105° to
130° |
Heat Stroke likely with
prolonged exposure |
90° to
105° |
Heat Stroke possible with
prolonged exposure |
|
Air
Temperature (°F)
|
70 |
75 |
80 |
85 |
90 |
95 |
100 |
105 |
110 |
115 |
120 |
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 |
|
|
|
|
|
|
|
100 |
72 |
80 |
91 |
108 |
|
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|
|
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|
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