Yakutat, Alaska · field elev 183 ft

Density Altitude at Tanis Mesa (A69)

Tanis Mesa sits at 183 ft, and even a typical August afternoon (62 °F) only lifts density altitude to about 428 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: August · ≈428 ft station: YAKUTAT STATE AP · 45 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at YAKUTAT STATE AP (45 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 28.6 −1,830 ft 34.8 −1,395 ft
February 30.6 −1,689 ft 37.8 −1,186 ft
March 31.9 −1,598 ft 40.0 −1,034 ft
April 38.6 −1,131 ft 46.9 −563 ft
May 45.6 −651 ft 53.7 −107 ft
June 51.9 −227 ft 58.8 231 ft
July 55.4 6 ft 61.6 415 ft
August 54.7 −40 ft 61.8 428 ft
September 49.4 −394 ft 56.9 106 ft
October 41.9 −904 ft 48.9 −428 ft
November 33.7 −1,471 ft 40.1 −1,027 ft
December 30.8 −1,675 ft 36.4 −1,283 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 A69

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 441 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 441 ft

Field elevation 183 ft — the air behaves like 441 ft.

PRESSURE ALT
184 ft
ISA DEVIATION
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RULE-OF-THUMB DA
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AIR DENSITY INDEX
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AIR DENSITY
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WATER · GRAINS/LB
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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 A69 in summer?

On a typical August afternoon — around 62 °F at the nearest NOAA normals station — density altitude at Tanis Mesa reaches roughly 428 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 A69 on an average day?

It swings with the seasons: from roughly −1,830 ft at the coldest month's average temperature to about 6 ft at the warmest month's — all from a constant field elevation of 183 ft. The month-by-month table above carries the full year.

What is the field elevation of Tanis Mesa?

183 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is A69 (FAA), in Yakutat, Alaska.