Mayville, New York · field elev 1,330 ft
Density Altitude at Dart (D79)
Dart sits at 1,330 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 3,012 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 | 27.3 | −487 ft | 34.4 | 9 ft |
| February | 27.6 | −466 ft | 35.8 | 105 ft |
| March | 35.4 | 78 ft | 43.7 | 644 ft |
| April | 47.1 | 873 ft | 57.0 | 1,528 ft |
| May | 58.4 | 1,620 ft | 68.2 | 2,252 ft |
| June | 68.1 | 2,245 ft | 77.1 | 2,813 ft |
| July | 71.8 | 2,480 ft | 80.3 | 3,012 ft |
| August | 70.9 | 2,423 ft | 79.2 | 2,944 ft |
| September | 64.9 | 2,040 ft | 73.6 | 2,593 ft |
| October | 54.2 | 1,345 ft | 62.3 | 1,873 ft |
| November | 43.3 | 617 ft | 50.0 | 1,067 ft |
| December | 33.3 | −68 ft | 39.0 | 325 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 D79
DENSITY ALTITUDE
Field elevation 1,330 ft — the air behaves like 2,993 ft.
- PRESSURE ALT
- 1,331 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
- D88 — Pratt'S Eastern Divide
Sherman · elev 1,640 ft
- KJHW — Chautauqua County/Jamestown
Jamestown · elev 1,723 ft
- KDKK — Chautauqua County/Dunkirk
Dunkirk · elev 692 ft
- D59 — Gowanda
Gowanda · elev 830 ft
- 4G2 — Hamburg
Hamburg · elev 751 ft
- N56 — Great Valley
Great Valley · elev 1,450 ft
- 9G0 — Buffalo Airfield
Buffalo · elev 670 ft
- 8G3 — Giermek Exec
Olean · elev 1,420 ft
Frequently asked questions
How high does density altitude get at D79 in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Dart reaches roughly 3,012 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 D79 on an average day?
It swings with the seasons: from roughly −487 ft at the coldest month's average temperature to about 2,480 ft at the warmest month's — all from a constant field elevation of 1,330 ft. The month-by-month table above carries the full year.
What is the field elevation of Dart?
1,330 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is D79 (FAA), in Mayville, New York.