Standard Atmosphere vs Altitude
A detailed table containing valuable data on air density, pressure, and temperature at various altitudes measured from mean sea level. The table is presented in both SI and US customary units, providing you with options to choose the unit system that is most convenient for your needs.
| Altitude (m) | Temperature (°C) | Pressure (Pa) | Density (kg/m3) |
|---|---|---|---|
| -1000 | 21.5 | 113920 | 1.347 |
| 0 | 15.0 | 101325 | 1.225 |
| 1000 | 8.5 | 89875 | 1.112 |
| 2000 | 2.0 | 79495 | 1.0065 |
| 3000 | -4.5 | 70109 | 0.9091 |
| 4000 | -11.0 | 61640 | 0.8191 |
| 5000 | -17.5 | 54020 | 0.7361 |
| 6000 | -24.0 | 47181 | 0.6597 |
| 7000 | -30.5 | 41061 | 0.5895 |
| 8000 | -37.0 | 35600 | 0.5252 |
| 9000 | -43.5 | 30742 | 0.4664 |
| 10000 | -50.0 | 26436 | 0.4127 |
| 11000 | -56.5 | 22632 | 0.3639 |
| 12000 | -56.5 | 19330 | 0.3108 |
| 13000 | -56.5 | 16510 | 0.2655 |
| 14000 | -56.5 | 14102 | 0.2268 |
| 15000 | -56.5 | 12045 | 0.1937 |
| 16000 | -56.5 | 10287 | 0.1654 |
| 17000 | -56.5 | 8787 | 0.1413 |
| 18000 | -56.5 | 7505 | 0.1207 |
| 19000 | -56.5 | 6410 | 0.1031 |
| 20000 | -56.5 | 5475 | 0.0880 |
| 25000 | -51.5 | 2511 | 0.0395 |
| 30000 | -46.5 | 1172 | 0.0180 |
| 35000 | -36.1 | 559 | 0.0082 |
| 40000 | -22.1 | 278 | 0.0039 |
| 45000 | -8.1 | 143 | 0.0019 |
| 50000 | -2.5 | 76 | 0.00098 |
| 55000 | -13.7 | 40 | 0.00054 |
| 60000 | -27.7 | 20 | 0.00029 |
| 65000 | -41.7 | 10 | 0.00015 |
| 70000 | -55.7 | 5 | 0.00007 |
| 75000 | -66.5 | 2 | 0.00003 |
| 80000 | -76.5 | 1 | 0.00002 |
The values in this table are based on the International Standard Atmosphere (ISA) model, which is an idealized model of the Earth’s atmosphere used for engineering and scientific purposes. Actual atmospheric conditions can vary significantly from these values.
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