SPILVE.LV • International standard atmosphere

All times are UTC

Altitude (feet)	Temperature (°C)	Pressure (hPa)	Rel. pressure (δ = P/P₀)	Density (kg/m³)	Rel. density (σ = ρ/ρ₀)
40,000	−56.5	187.54	0.19	0.302	0.25
39,000	−56.5	196.77	0.19	0.316	0.26
38,000	−56.5	206.46	0.20	0.332	0.27
37,000	−56.5	216.63	0.21	0.348	0.28
36,000	−56.3	227.29	0.22	0.365	0.30
35,000	−54.3	238.42	0.24	0.380	0.31
34,000	−52.3	249.99	0.25	0.394	0.32
33,000	−50.3	262.01	0.26	0.410	0.33
32,000	−48.4	274.49	0.27	0.425	0.35
31,000	−46.4	287.45	0.28	0.442	0.36
30,000	−44.4	300.90	0.30	0.458	0.37
29,000	−42.4	314.85	0.31	0.475	0.39
28,000	−40.4	329.32	0.33	0.493	0.40
27,000	−38.5	344.33	0.34	0.511	0.42
26,000	−36.5	359.89	0.36	0.530	0.43
25,000	−34.5	376.01	0.37	0.549	0.45
24,000	−32.5	392.71	0.39	0.569	0.46
23,000	−30.5	410.01	0.40	0.589	0.48
22,000	−28.6	427.92	0.42	0.610	0.50
21,000	−26.6	446.45	0.44	0.631	0.52
20,000	−24.6	465.63	0.46	0.653	0.53
19,000	−22.6	485.48	0.48	0.675	0.55
18,000	−20.6	506.00	0.50	0.698	0.57
17,000	−18.7	527.22	0.52	0.722	0.59
16,000	−16.7	549.15	0.54	0.746	0.61
15,000	−14.7	571.82	0.56	0.771	0.63
14,000	−12.7	595.24	0.59	0.796	0.65
13,000	−10.7	619.43	0.61	0.822	0.67
12,000	−8.8	644.41	0.64	0.849	0.69
11,000	−6.8	670.20	0.66	0.877	0.72
10,000	−4.8	696.82	0.69	0.905	0.74
9,000	−2.8	724.29	0.71	0.933	0.76
8,000	−0.8	752.62	0.74	0.963	0.79
7,000	1.1	781.85	0.77	0.993	0.81
6,000	3.1	812.00	0.80	1.024	0.84
5,000	5.1	843.07	0.83	1.056	0.86
4,000	7.1	875.11	0.86	1.088	0.89
3,000	9.1	908.12	0.90	1.121	0.92
2,000	11.0	942.13	0.93	1.155	0.94
1,000	13.0	977.17	0.96	1.190	0.97
0	15.0	1,013.25	1.00	1.225	1.00

All times are UTC