Great Valley, New York · field elev 1,450 ft
Density Altitude at Great Valley (N56)
Great Valley sits at 1,450 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 3,251 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 | 22.7 | −662 ft | 32.4 | 20 ft |
| February | 23.7 | −591 ft | 35.1 | 207 ft |
| March | 31.9 | −15 ft | 44.0 | 813 ft |
| April | 44.2 | 827 ft | 57.2 | 1,690 ft |
| May | 55.5 | 1,578 ft | 69.3 | 2,469 ft |
| June | 63.9 | 2,124 ft | 77.7 | 2,997 ft |
| July | 68.0 | 2,386 ft | 81.8 | 3,251 ft |
| August | 66.4 | 2,284 ft | 80.4 | 3,164 ft |
| September | 59.7 | 1,852 ft | 73.6 | 2,740 ft |
| October | 47.8 | 1,069 ft | 60.9 | 1,930 ft |
| November | 37.7 | 385 ft | 48.0 | 1,082 ft |
| December | 28.1 | −280 ft | 37.3 | 358 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 N56
DENSITY ALTITUDE
Field elevation 1,450 ft — the air behaves like 3,263 ft.
- PRESSURE ALT
- 1,451 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 New York fields
- KOLE — Cattaraugus County-Olean
Olean · elev 2,135 ft
- 8G3 — Giermek Exec
Olean · elev 1,420 ft
- D59 — Gowanda
Gowanda · elev 830 ft
- D23 — Arcade Tri-County
Arcade · elev 1,745 ft
- KJHW — Chautauqua County/Jamestown
Jamestown · elev 1,723 ft
- KELZ — Wellsville Municipal/Tarantine Field
Wellsville · elev 2,125 ft
- 4G2 — Hamburg
Hamburg · elev 751 ft
- KDKK — Chautauqua County/Dunkirk
Dunkirk · elev 692 ft
Frequently asked questions
How high does density altitude get at N56 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Great Valley reaches roughly 3,251 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 N56 on an average day?
It swings with the seasons: from roughly −662 ft at the coldest month's average temperature to about 2,386 ft at the warmest month's — all from a constant field elevation of 1,450 ft. The month-by-month table above carries the full year.
What is the field elevation of Great Valley?
1,450 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is N56 (FAA), in Great Valley, New York.