Greeneville, Tennessee · field elev 1,608 ft
Density Altitude at Greeneville Municipal (KGCY)
Greeneville Municipal sits at 1,608 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 3,780 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 36.6 | 506 ft | 47.6 | 1,251 ft |
| February | 40.0 | 739 ft | 51.8 | 1,530 ft |
| March | 47.1 | 1,217 ft | 60.1 | 2,073 ft |
| April | 55.9 | 1,799 ft | 69.6 | 2,681 ft |
| May | 64.8 | 2,376 ft | 77.5 | 3,177 ft |
| June | 72.5 | 2,865 ft | 84.2 | 3,591 ft |
| July | 76.1 | 3,090 ft | 87.3 | 3,780 ft |
| August | 74.9 | 3,015 ft | 86.7 | 3,744 ft |
| September | 69.1 | 2,650 ft | 82.1 | 3,462 ft |
| October | 57.7 | 1,917 ft | 71.8 | 2,821 ft |
| November | 46.6 | 1,184 ft | 60.0 | 2,066 ft |
| December | 39.7 | 718 ft | 50.8 | 1,464 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 KGCY
DENSITY ALTITUDE
Field elevation 1,608 ft — the air behaves like 3,762 ft.
- PRESSURE ALT
- 1,609 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
Nearby Tennessee fields
- KRVN — Hawkins County
Rogersville · elev 1,255 ft
- KTRI — Tri-Cities
Bristol/Johnson/Kingsport · elev 1,519 ft
- 0A4 — Johnson City
Johnson City · elev 1,550 ft
- KMOR — Moore-Murrell
Morristown · elev 1,313 ft
- 0A9 — William B Greene Jr Regional
Elizabethton · elev 1,593 ft
- 3A2 — The New Tazewell/Wayne Coffey Municipal
Tazewell · elev 1,179 ft
- KGKT — Gatlinburg-Pigeon Forge
Sevierville · elev 1,014 ft
- 6A4 — Johnson County
Mountain City · elev 2,241 ft
Frequently asked questions
How high does density altitude get at KGCY in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Greeneville Municipal reaches roughly 3,780 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 KGCY on an average day?
It swings with the seasons: from roughly 506 ft at the coldest month's average temperature to about 3,090 ft at the warmest month's — all from a constant field elevation of 1,608 ft. The month-by-month table above carries the full year.
What is the field elevation of Greeneville Municipal?
1,608 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGCY (ICAO) / GCY (FAA), in Greeneville, Tennessee.