Air Temperature, Pressure and Density vs. Altitude
Standard values for pressure, temperature and density (ignoring the slight effect of humidity) at altitudes from sea level to 16,000 feet (about 4900 m):
| Altitude (feet) | Abs. Pressure (in. Hg) | Temp. (F) | Density (%) |
|---|---|---|---|
| sea level | 29.92 | 59.0 | 100 |
| 2000 | 27.82 | 51.9 | 94.3 |
| 4000 | 25.84 | 44.7 | 88.8 |
| 6000 | 23.98 | 37.6 | 83.6 |
| 8000 | 22.22 | 30.5 | 78.6 |
| 10000 | 20.57 | 23.3 | 73.8 |
| 12000 | 19.02 | 16.2 | 69.3 |
| 14000 | 17.57 | 9.1 | 65.0 |
| 16000 | 16.21 | 1.9 | 60.9 |
- density - % of density at sea level
- 1 ft (foot) = 0.3048 m
- 1 in mercury (Hg) = 3,376.8 N/m2 (Pa)= 0.49 lb/in2 (psi) = 12.8 in water
- T(oC) = 5/9[T(oF) - 32]
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