Somerville, New Jersey · field elev 106 ft
Density Altitude at Somerset (KSMQ)
Somerset sits at 106 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 1,883 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 | 29.9 | −1,835 ft | 39.3 | −1,178 ft |
| February | 32.6 | −1,645 ft | 42.8 | −938 ft |
| March | 40.1 | −1,123 ft | 50.7 | −402 ft |
| April | 51.0 | −382 ft | 63.1 | 418 ft |
| May | 60.6 | 254 ft | 73.0 | 1,055 ft |
| June | 69.5 | 831 ft | 81.4 | 1,585 ft |
| July | 74.6 | 1,157 ft | 86.2 | 1,883 ft |
| August | 72.8 | 1,042 ft | 84.3 | 1,765 ft |
| September | 65.8 | 593 ft | 77.7 | 1,353 ft |
| October | 54.0 | −182 ft | 65.9 | 599 ft |
| November | 43.9 | −863 ft | 54.9 | −122 ft |
| December | 35.1 | −1,470 ft | 44.1 | −849 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 KSMQ
DENSITY ALTITUDE
Field elevation 106 ft — the air behaves like 1,871 ft.
- PRESSURE ALT
- 107 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
- N51 — Solberg/Hunterdon
Readington · elev 190 ft
- 47N — Central Jersey Regional
Manville · elev 86 ft
- 39N — Princeton
Princeton/Rocky Hill · elev 128 ft
- N05 — Hackettstown
Hackettstown · elev 670 ft
- N40 — Sky Manor
Pittstown · elev 560 ft
- KMMU — Morristown Municipal
Morristown · elev 187 ft
- N85 — Alexandria
Pittstown · elev 480 ft
- KLDJ — Linden
Linden · elev 22 ft
Frequently asked questions
How high does density altitude get at KSMQ in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Somerset reaches roughly 1,883 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 KSMQ on an average day?
It swings with the seasons: from roughly −1,835 ft at the coldest month's average temperature to about 1,157 ft at the warmest month's — all from a constant field elevation of 106 ft. The month-by-month table above carries the full year.
What is the field elevation of Somerset?
106 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSMQ (ICAO) / SMQ (FAA), in Somerville, New Jersey.