Folkston, Georgia · field elev 68 ft

Density Altitude at Davis Field (3J6)

Davis Field sits at 68 ft, and even a typical July afternoon (94 °F) only lifts density altitude to about 2,339 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,339 ft station: FOLKSTON 9 SW · 7 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at FOLKSTON 9 SW (7 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 55.2 −149 ft 66.6 598 ft
February 58.4 63 ft 70.2 830 ft
March 63.6 403 ft 76.3 1,218 ft
April 69.7 798 ft 82.7 1,619 ft
May 76.1 1,205 ft 88.4 1,972 ft
June 81.5 1,545 ft 92.6 2,229 ft
July 83.6 1,675 ft 94.4 2,339 ft
August 83.0 1,638 ft 93.2 2,266 ft
September 79.6 1,426 ft 89.5 2,040 ft
October 71.9 938 ft 82.6 1,613 ft
November 63.2 377 ft 74.7 1,117 ft
December 57.4 −3 ft 68.4 714 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 3J6

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,314 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,314 ft

Field elevation 68 ft — the air behaves like 2,314 ft.

PRESSURE ALT
69 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 3J6 in summer?

On a typical July afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Davis Field reaches roughly 2,339 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 3J6 on an average day?

It swings with the seasons: from roughly −149 ft at the coldest month's average temperature to about 1,675 ft at the warmest month's — all from a constant field elevation of 68 ft. The month-by-month table above carries the full year.

What is the field elevation of Davis Field?

68 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3J6 (FAA), in Folkston, Georgia.