Gallupville, New York · field elev 1,200 ft
Density Altitude at Blue Heron (N25)
Blue Heron sits at 1,200 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,927 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 | 21.6 | −1,054 ft | 31.1 | −383 ft |
| February | 23.4 | −925 ft | 33.8 | −195 ft |
| March | 31.2 | −376 ft | 42.0 | 368 ft |
| April | 45.0 | 571 ft | 56.8 | 1,355 ft |
| May | 57.0 | 1,368 ft | 69.9 | 2,200 ft |
| June | 65.2 | 1,900 ft | 76.9 | 2,641 ft |
| July | 70.1 | 2,213 ft | 81.5 | 2,927 ft |
| August | 67.7 | 2,060 ft | 79.7 | 2,816 ft |
| September | 61.1 | 1,635 ft | 73.7 | 2,441 ft |
| October | 48.2 | 786 ft | 58.7 | 1,479 ft |
| November | 37.9 | 88 ft | 47.8 | 759 ft |
| December | 27.4 | −642 ft | 35.9 | −50 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 N25
DENSITY ALTITUDE
Field elevation 1,200 ft — the air behaves like 2,958 ft.
- PRESSURE ALT
- 1,201 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
- 4B1 — Duanesburg
Duanesburg · elev 714 ft
- KSCH — Schenectady County
Schenectady · elev 378 ft
- K31 — Sharon
Sharon Springs · elev 1,508 ft
- KALB — Albany International
Albany · elev 285 ft
- 4B0 — South Albany
South Bethlehem · elev 196 ft
- 1H4 — Greenville-Rainbow
Greenville · elev 840 ft
- NY0 — Fulton County
Johnstown · elev 881 ft
- 1I5 — Freehold
Freehold · elev 440 ft
Frequently asked questions
How high does density altitude get at N25 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Blue Heron reaches roughly 2,927 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 N25 on an average day?
It swings with the seasons: from roughly −1,054 ft at the coldest month's average temperature to about 2,213 ft at the warmest month's — all from a constant field elevation of 1,200 ft. The month-by-month table above carries the full year.
What is the field elevation of Blue Heron?
1,200 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is N25 (FAA), in Gallupville, New York.