Cross Keys, New Jersey · field elev 162 ft
Density Altitude at Cross Keys (17N)
Cross Keys sits at 162 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 1,988 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 | 33.2 | −1,533 ft | 41.3 | −971 ft |
| February | 35.1 | −1,400 ft | 44.2 | −773 ft |
| March | 42.6 | −882 ft | 52.0 | −246 ft |
| April | 52.5 | −213 ft | 63.6 | 519 ft |
| May | 62.3 | 434 ft | 72.5 | 1,092 ft |
| June | 71.9 | 1,054 ft | 82.0 | 1,691 ft |
| July | 77.0 | 1,377 ft | 86.8 | 1,988 ft |
| August | 75.2 | 1,264 ft | 84.6 | 1,852 ft |
| September | 69.1 | 875 ft | 78.7 | 1,484 ft |
| October | 56.3 | 40 ft | 66.8 | 726 ft |
| November | 45.8 | −664 ft | 55.1 | −39 ft |
| December | 38.0 | −1,198 ft | 46.0 | −650 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 17N
DENSITY ALTITUDE
Field elevation 162 ft — the air behaves like 2,001 ft.
- PRESSURE ALT
- 163 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
- C01 — Southern Cross
Williamstown · elev 145 ft
- 19N — Pine Valley
Berlin · elev 150 ft
- 28N — Vineland-Downstown
Vineland · elev 120 ft
- 29N — Kroelinger
Vineland · elev 93 ft
- N81 — Hammonton Municipal
Hammonton · elev 65 ft
- 00N — Bucks
Bridgeton · elev 108 ft
- KVAY — South Jersey Regional
Mount Holly · elev 53 ft
- N14 — Flying W
Lumberton · elev 49 ft
Frequently asked questions
How high does density altitude get at 17N in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Cross Keys reaches roughly 1,988 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 17N on an average day?
It swings with the seasons: from roughly −1,533 ft at the coldest month's average temperature to about 1,377 ft at the warmest month's — all from a constant field elevation of 162 ft. The month-by-month table above carries the full year.
What is the field elevation of Cross Keys?
162 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 17N (FAA), in Cross Keys, New Jersey.