Toughkenamon, Pennsylvania · field elev 435 ft
Density Altitude at New Garden (N57)
New Garden sits at 435 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,124 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 | 30.6 | −1,374 ft | 38.6 | −817 ft |
| February | 32.6 | −1,233 ft | 41.2 | −638 ft |
| March | 40.4 | −693 ft | 49.8 | −55 ft |
| April | 50.8 | 12 ft | 61.5 | 719 ft |
| May | 60.7 | 667 ft | 71.2 | 1,344 ft |
| June | 69.2 | 1,216 ft | 79.5 | 1,868 ft |
| July | 73.6 | 1,497 ft | 83.6 | 2,124 ft |
| August | 71.7 | 1,376 ft | 81.5 | 1,993 ft |
| September | 65.2 | 959 ft | 75.3 | 1,604 ft |
| October | 53.9 | 219 ft | 63.9 | 875 ft |
| November | 43.8 | −461 ft | 53.3 | 179 ft |
| December | 35.4 | −1,038 ft | 43.2 | −501 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 N57
DENSITY ALTITUDE
Field elevation 435 ft — the air behaves like 2,148 ft.
- PRESSURE ALT
- 436 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 Pennsylvania fields
- KMQS — Chester County G O Carlson
Coatesville · elev 660 ft
- KOQN — Brandywine Regional
West Chester · elev 465 ft
- S37 — Smoketown
Smoketown · elev 370 ft
- KPHL — Philadelphia International
Philadelphia · elev 36 ft
- N47 — Pottstown Municipal
Pottstown · elev 256 ft
- KPTW — Heritage Field
Pottstown · elev 308 ft
- KLOM — Wings Field
Philadelphia · elev 302 ft
- KLNS — Lancaster
Lancaster · elev 403 ft
Frequently asked questions
How high does density altitude get at N57 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at New Garden reaches roughly 2,124 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 N57 on an average day?
It swings with the seasons: from roughly −1,374 ft at the coldest month's average temperature to about 1,497 ft at the warmest month's — all from a constant field elevation of 435 ft. The month-by-month table above carries the full year.
What is the field elevation of New Garden?
435 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is N57 (FAA), in Toughkenamon, Pennsylvania.