Livingston, New York · field elev 297 ft
Density Altitude at Green Acres (1A1)
Green Acres sits at 297 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,067 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 | 26.6 | −1,830 ft | 35.4 | −1,210 ft |
| February | 28.9 | −1,666 ft | 38.4 | −1,002 ft |
| March | 37.9 | −1,037 ft | 48.3 | −327 ft |
| April | 50.4 | −186 ft | 62.9 | 640 ft |
| May | 61.4 | 542 ft | 73.8 | 1,340 ft |
| June | 69.5 | 1,066 ft | 81.2 | 1,806 ft |
| July | 74.0 | 1,353 ft | 85.4 | 2,067 ft |
| August | 72.1 | 1,232 ft | 83.1 | 1,924 ft |
| September | 65.0 | 776 ft | 75.4 | 1,442 ft |
| October | 53.4 | 15 ft | 63.8 | 698 ft |
| November | 42.2 | −741 ft | 51.1 | −139 ft |
| December | 32.3 | −1,427 ft | 39.9 | −899 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 1A1
DENSITY ALTITUDE
Field elevation 297 ft — the air behaves like 2,042 ft.
- PRESSURE ALT
- 298 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
- 1B1 — Columbia County
Hudson · elev 198 ft
- NY1 — Kline Kill
Ghent · elev 380 ft
- 20N — Kingston-Ulster
Kingston · elev 147 ft
- 1I5 — Freehold
Freehold · elev 440 ft
- 09N — Airhaven
Staatsburg · elev 450 ft
- 1H4 — Greenville-Rainbow
Greenville · elev 840 ft
- 4B0 — South Albany
South Bethlehem · elev 196 ft
- 44N — Sky Acres
Millbrook · elev 697 ft
Frequently asked questions
How high does density altitude get at 1A1 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Green Acres reaches roughly 2,067 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 1A1 on an average day?
It swings with the seasons: from roughly −1,830 ft at the coldest month's average temperature to about 1,353 ft at the warmest month's — all from a constant field elevation of 297 ft. The month-by-month table above carries the full year.
What is the field elevation of Green Acres?
297 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1A1 (FAA), in Livingston, New York.