Westhampton Beach, New York · field elev 66 ft
Density Altitude at Francis S Gabreski (KFOK)
Francis S Gabreski sits at 66 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 1,530 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 | 29.4 | −1,920 ft | 38.7 | −1,270 ft |
| February | 30.6 | −1,835 ft | 40.4 | −1,152 ft |
| March | 37.2 | −1,374 ft | 46.8 | −715 ft |
| April | 46.1 | −763 ft | 56.6 | −59 ft |
| May | 55.9 | −105 ft | 66.2 | 570 ft |
| June | 65.6 | 531 ft | 75.4 | 1,159 ft |
| July | 71.9 | 936 ft | 81.3 | 1,530 ft |
| August | 70.8 | 866 ft | 80.3 | 1,467 ft |
| September | 63.7 | 407 ft | 73.6 | 1,044 ft |
| October | 52.9 | −305 ft | 63.4 | 388 ft |
| November | 43.5 | −940 ft | 53.3 | −278 ft |
| December | 35.2 | −1,513 ft | 44.5 | −871 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 KFOK
DENSITY ALTITUDE
Field elevation 66 ft — the air behaves like 1,511 ft.
- PRESSURE ALT
- 67 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
- 21N — Mattituck
Mattituck · elev 30 ft
- KHWV — Brookhaven
Shirley · elev 81 ft
- KJPX — East Hampton Town
East Hampton · elev 55 ft
- 23N — Bayport Aerodrome
Bayport · elev 39 ft
- KISP — Long Island Mac Arthur
New York · elev 99 ft
- KMTP — Montauk
Montauk · elev 7 ft
- KFRG — Republic
Farmingdale · elev 82 ft
- 0B8 — Elizabeth Field
Fishers Island · elev 7 ft
Frequently asked questions
How high does density altitude get at KFOK in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Francis S Gabreski reaches roughly 1,530 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 KFOK on an average day?
It swings with the seasons: from roughly −1,920 ft at the coldest month's average temperature to about 936 ft at the warmest month's — all from a constant field elevation of 66 ft. The month-by-month table above carries the full year.
What is the field elevation of Francis S Gabreski?
66 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFOK (ICAO) / FOK (FAA), in Westhampton Beach, New York.