ICAO and Standard Metro Parameters

 

 

ICAO1

STD METRO2

Barometric Pressure (In. Hg)

29.921

29.527

Air Density (lbs ft3)

0.076474

0.0751265

Temperature (° F)

59

59

Relative Humidity (%)

0

78

Velocity of Sound (fps)

1116.45

1120.27

Acceleration of Gravity (fps2)

32.1740

32.1522

  1. International Civil Aviation Organization
  2. Standard Meteorological Conditions