Meteorology

Altimeter Setting(QNH)

Definition

The barometric pressure adjusted to sea level used to set the altimeter so it reads field elevation on the ground. Regional QNH is used below transition altitude. Standard setting 1013.25 hPa is used above.

Related Terms

Pressure Altitude

The indicated altitude when the altimeter is set to 29.92 inHg (1013.25 hPa). Us...

Transition Altitude

The altitude at which pilots change from QNH altimeter setting to standard press...

Test your knowledge

Think you understand Altimeter Setting? Challenge yourself with practice questions covering meteorology and all other ATPL subjects.

Start a Practice Quiz

Or browse all questions by subject