Table 1-6.—U.S. Standard Atmosphere Heights and Temperatures
HEIGHTS TO STANDARD PRESSURE AND TEMPERATURE
Altitude,
feet
Pressure,
hPa
inches
Temperature,
°C
°F
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
16,000
17,000
18,000
19,000
20,000
21,000
22,000
23,000
24,000
25,000
1013.2
29.92
977.2
28.86
942.1
27.82
908.1
26.82
875.1
25.84
843.1
24.90
812.0
23.98
781.8
23.09
752.6
22.22
724.3
21.39
696.8
20.58
670.2
19.79
644.4
19.03
619.4
18.29
595.2
17.58
571.8
16.89
549.2
16.22
427.2
15.57
506.0
14.94
484.5
14.34
465.6
13.75
446.4
13.18
427.9
12.64
410.0
12.11
392.7
11.60
376.0
11.10
15.0
13.0
11.0
9.0
7.1
5.1
3.1
1.1
-0.8
-2.8
-4.8
-6.8
-8.8
-10.8
-12.7
-14.7
-16.7
-18.7
-29.7
-22.6
-24.6
-26.6
-28.6
-30.6
-32.5
-34.5
59.0
55.4
51.9
48.3
44.7
41.2
37.6
34.0
30.5
26.9
23.3
19.8
16.2
12.6
9.1
5.5
1.9
-1.6
-5.2
-8.8
-12.3
-15.9
-19.5
-23.9
-26.6
-30.2
Altitude,
feet
Pressure,
hPa
inches
Temperature,
°C
°F
26,000
359.9
27,000
344.3
28,000
329.3
29,000
3 14.8
30,000
300.9
31,000
287.4
32,000
274.5
33,000
262.0
34,000
250.0
35,000
238.4
36,000
227.3
37,000
216.6
38,000
206.5
39,000
196.8
40,000
187.5
41,000
178.7
42,000
170.4
43,000
162.4
44,000
154.7
45,000
147.5
46,000
140.6
47,000
134.0
48,000
127.7
49,000
121.7
50,000
116.0
10.63
10.17
9.72
9.30
8.89
8.49
8.11
7.74
7.38
7.04
6.71
6.40
6.10
5.81
5.54
5.28
5.04
4.79
4.57
4.35
4.15
3.96
3.77
3.59
3.42
-36.5
-33.7
-38.5
-37.3
-40.5
-40.9
-42.5
-44.4
-44.4
-48.0
-46.4
-51.6
-48.4
-55.1
-50.4
-58.7
-52.4
-62.2
-54.3
-65.8
-56.3
-69.4
-56.5
-69.7
Constant to
65,500 feet
STANDARD PRESSURE SURFACES
Pressure
surface,
hPa
Height,
feet
meters
Temperature
°C
°F
Pressure
surface,
hPa
Height,
feet
meters
Temperature,
°C
°F
1000
200
925
150
850
100
700
70
500
50
400
30
300
20
250
364
2,512
4,781
9,882
18,289
23,574
30,065
33,999
111
766
1,457
3,012
5,574
7,185
9,164
10,363
14.2
10.0
5.5
-4.7
-21.3
-31.7
-44.7
-52.4
57.8
50.0
41.9
23.5
-6.3
-25.1
-48.5
-62.3
38,662
44,647
53,083
60,504
67,507
78,244
86,881
10
101,885
11,784
13,608
16,180
18,442
20,576
23,849
26,481
31,055
-56.7
-70.1
-56.7
-70.1
-56.7
-70.1
-56.7
-70.1
-55.8
-68.4
-52.7
-62.9
-49.9
-57.8
-45.4
-49.7
1-63
