Sea‐level pressure is 0.101325 MPa (or 14.696 psia or 1.000 atm).
Altitude (m) | Temperature (K) | Pressure Ratio | Density (kg/m3) |
0 (sea level) | 288.150 | 1.0000 | 1.2250 |
1,000 | 281.651 | 8.8700 × 10−1 | 1.1117 |
3,000 | 268.650 | 6.6919 × 10−1 | 9.0912 × 10−1 |
5,000 | 255.650 | 5.3313 × 10−1 | 7.6312 × 10−1 |
10,000 | 223.252 | 2.6151 × 10−1 | 4.1351 × 10−1 |
25,000 | 221.552 | 2.5158 × 10−2 | 4.0084 × 10−2 |
50,000 | 270.650 | 7.8735 × 10−4 | 1.0269 × 10−3 |
75,000 | 206.650 | 2.0408 × 10−5 | 3.4861 × 10−5 |
100,000 | 195.08 | 3.1593 × 10−7 | 5.604 × 10−7 |
130,000 | 469.27 | 1.2341 × 10−8 | 8.152 × 10−9 |
160,000 | 696.29 | 2.9997 × 10−9 | 1.233 × 10−9 |
200,000 | 845.56 | 8.3628 × 10−10 | 2.541 × 10−10 |
300,000 | 976.01 | 8.6557 × 10−11 | 1.916 × 10−11 |
400,000 | 995.83 | 1.4328 × 10−11 | 2.803 × 10−12 |
600,000 | 999.85 | 8.1056 × 10−13 | 2.137 × 10−13 |
1,000,000 | 1000.00 | 7.4155 × 10−14 | 3.561 × 10−15 |
Source: U.S. Standard Atmosphere, National Oceanic and Atmospheric Administration, National Aeronautics and Space Administration, and U.S. Air Force, Washington, DC, 1976 (NOAA‐S/T‐1562).