Pittstown, New Jersey · field elev 560 ft
Density Altitude at Sky Manor (N40)
Sky Manor sits at 560 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,418 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 | 29.2 | −1,316 ft | 37.8 | −716 ft |
| February | 31.3 | −1,168 ft | 40.9 | −503 ft |
| March | 39.3 | −613 ft | 49.6 | 86 ft |
| April | 50.6 | 153 ft | 62.5 | 938 ft |
| May | 60.5 | 808 ft | 72.4 | 1,574 ft |
| June | 69.5 | 1,389 ft | 80.9 | 2,109 ft |
| July | 74.6 | 1,713 ft | 85.9 | 2,418 ft |
| August | 72.7 | 1,593 ft | 84.1 | 2,307 ft |
| September | 65.7 | 1,145 ft | 77.4 | 1,890 ft |
| October | 53.6 | 353 ft | 65.0 | 1,100 ft |
| November | 43.2 | −346 ft | 53.3 | 333 ft |
| December | 34.5 | −945 ft | 42.8 | −373 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 N40
DENSITY ALTITUDE
Field elevation 560 ft — the air behaves like 2,424 ft.
- PRESSURE ALT
- 561 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 Jersey fields
- N85 — Alexandria
Pittstown · elev 480 ft
- N51 — Solberg/Hunterdon
Readington · elev 190 ft
- KSMQ — Somerset
Somerville · elev 106 ft
- N05 — Hackettstown
Hackettstown · elev 670 ft
- 47N — Central Jersey Regional
Manville · elev 86 ft
- 39N — Princeton
Princeton/Rocky Hill · elev 128 ft
- KTTN — Trenton Mercer
Trenton · elev 213 ft
- 1N7 — Blairstown
Blairstown · elev 372 ft
Frequently asked questions
How high does density altitude get at N40 in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Sky Manor reaches roughly 2,418 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 N40 on an average day?
It swings with the seasons: from roughly −1,316 ft at the coldest month's average temperature to about 1,713 ft at the warmest month's — all from a constant field elevation of 560 ft. The month-by-month table above carries the full year.
What is the field elevation of Sky Manor?
560 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is N40 (FAA), in Pittstown, New Jersey.