Tarkio, Missouri · field elev 916 ft

Density Altitude at Gould Peterson Municipal (K57)

Gould Peterson Municipal sits at 916 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,791 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,791 ft station: TARKIO · 1 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at TARKIO (1 mi from the field) · standard pressure, dry air
Month Avg temp °F DA at avg temp Afternoon high °F DA on a typical afternoon
January 24.2 −1,224 ft 33.4 −577 ft
February 28.0 −955 ft 37.5 −293 ft
March 40.6 −81 ft 52.0 687 ft
April 51.2 634 ft 63.0 1,409 ft
May 61.6 1,318 ft 72.1 1,992 ft
June 71.8 1,972 ft 81.6 2,587 ft
July 75.3 2,194 ft 84.9 2,791 ft
August 73.5 2,080 ft 84.4 2,760 ft
September 65.7 1,583 ft 77.8 2,350 ft
October 52.9 747 ft 65.3 1,557 ft
November 39.9 −129 ft 50.0 554 ft
December 28.2 −941 ft 36.7 −348 ft

▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.

Run today’s numbers for K57

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,797 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,797 ft

Field elevation 916 ft — the air behaves like 2,797 ft.

PRESSURE ALT
917 ft
ISA DEVIATION
RULE-OF-THUMB DA
AIR DENSITY INDEX
AIR DENSITY
WATER · GRAINS/LB

For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment

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Frequently asked questions

How high does density altitude get at K57 in summer?

On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Gould Peterson Municipal reaches roughly 2,791 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.

What is the density altitude at K57 on an average day?

It swings with the seasons: from roughly −1,224 ft at the coldest month's average temperature to about 2,194 ft at the warmest month's — all from a constant field elevation of 916 ft. The month-by-month table above carries the full year.

What is the field elevation of Gould Peterson Municipal?

916 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is K57 (FAA), in Tarkio, Missouri.