Kingston, New York · field elev 147 ft
Density Altitude at Kingston-Ulster (20N)
Kingston-Ulster sits at 147 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 1,927 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 | 24.3 | −2,182 ft | 37.2 | −1,273 ft |
| February | 26.1 | −2,053 ft | 40.2 | −1,065 ft |
| March | 34.2 | −1,481 ft | 48.6 | −493 ft |
| April | 46.2 | −655 ft | 61.9 | 390 ft |
| May | 57.5 | 101 ft | 72.5 | 1,074 ft |
| June | 66.4 | 682 ft | 81.4 | 1,635 ft |
| July | 70.9 | 972 ft | 86.1 | 1,927 ft |
| August | 69.7 | 895 ft | 84.3 | 1,815 ft |
| September | 61.7 | 377 ft | 76.8 | 1,346 ft |
| October | 49.8 | −412 ft | 64.5 | 559 ft |
| November | 39.4 | −1,120 ft | 52.9 | −204 ft |
| December | 29.5 | −1,812 ft | 41.8 | −955 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 20N
DENSITY ALTITUDE
Field elevation 147 ft — the air behaves like 1,921 ft.
- PRESSURE ALT
- 148 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
- 09N — Airhaven
Staatsburg · elev 450 ft
- 1A1 — Green Acres
Livingston · elev 297 ft
- 44N — Sky Acres
Millbrook · elev 697 ft
- 1B1 — Columbia County
Hudson · elev 198 ft
- KPOU — Hudson Valley Regional
Poughkeepsie · elev 164 ft
- N45 — Kobelt
Wallkill · elev 420 ft
- 1I5 — Freehold
Freehold · elev 440 ft
- N89 — Joseph Y Resnick
Ellenville · elev 290 ft
Frequently asked questions
How high does density altitude get at 20N in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Kingston-Ulster reaches roughly 1,927 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 20N on an average day?
It swings with the seasons: from roughly −2,182 ft at the coldest month's average temperature to about 972 ft at the warmest month's — all from a constant field elevation of 147 ft. The month-by-month table above carries the full year.
What is the field elevation of Kingston-Ulster?
147 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 20N (FAA), in Kingston, New York.