Hammonton, New Jersey · field elev 65 ft
Density Altitude at Hammonton Municipal (N81)
Hammonton Municipal sits at 65 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 1,901 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 | 32.8 | −1,682 ft | 41.8 | −1,057 ft |
| February | 34.9 | −1,535 ft | 44.7 | −859 ft |
| March | 41.5 | −1,078 ft | 52.0 | −366 ft |
| April | 52.3 | −346 ft | 63.7 | 406 ft |
| May | 62.1 | 302 ft | 73.2 | 1,018 ft |
| June | 71.6 | 916 ft | 82.3 | 1,591 ft |
| July | 76.9 | 1,252 ft | 87.3 | 1,901 ft |
| August | 74.8 | 1,119 ft | 85.1 | 1,765 ft |
| September | 68.0 | 685 ft | 78.7 | 1,366 ft |
| October | 56.3 | −80 ft | 67.4 | 646 ft |
| November | 45.9 | −777 ft | 56.4 | −73 ft |
| December | 37.7 | −1,340 ft | 47.0 | −703 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 N81
DENSITY ALTITUDE
Field elevation 65 ft — the air behaves like 1,882 ft.
- PRESSURE ALT
- 66 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
- 19N — Pine Valley
Berlin · elev 150 ft
- C01 — Southern Cross
Williamstown · elev 145 ft
- 28N — Vineland-Downstown
Vineland · elev 120 ft
- 17N — Cross Keys
Cross Keys · elev 162 ft
- KACY — Atlantic City International
Atlantic City · elev 75 ft
- 29N — Kroelinger
Vineland · elev 93 ft
- N14 — Flying W
Lumberton · elev 49 ft
- KVAY — South Jersey Regional
Mount Holly · elev 53 ft
Frequently asked questions
How high does density altitude get at N81 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Hammonton Municipal reaches roughly 1,901 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 N81 on an average day?
It swings with the seasons: from roughly −1,682 ft at the coldest month's average temperature to about 1,252 ft at the warmest month's — all from a constant field elevation of 65 ft. The month-by-month table above carries the full year.
What is the field elevation of Hammonton Municipal?
65 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is N81 (FAA), in Hammonton, New Jersey.