Round Lake, New York · field elev 178 ft
Density Altitude at Round Lake (W57)
Round Lake sits at 178 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 1,822 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 | 23.1 | −2,229 ft | 32.0 | −1,597 ft |
| February | 25.7 | −2,043 ft | 35.4 | −1,359 ft |
| March | 35.1 | −1,380 ft | 45.3 | −678 ft |
| April | 48.1 | −488 ft | 60.3 | 323 ft |
| May | 59.8 | 291 ft | 72.5 | 1,112 ft |
| June | 68.0 | 824 ft | 79.9 | 1,579 ft |
| July | 72.4 | 1,105 ft | 83.8 | 1,822 ft |
| August | 70.7 | 997 ft | 82.1 | 1,716 ft |
| September | 63.3 | 519 ft | 74.9 | 1,264 ft |
| October | 51.3 | −273 ft | 62.1 | 441 ft |
| November | 39.8 | −1,054 ft | 48.7 | −448 ft |
| December | 29.3 | −1,787 ft | 37.0 | −1,248 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 W57
DENSITY ALTITUDE
Field elevation 178 ft — the air behaves like 1,835 ft.
- PRESSURE ALT
- 179 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
- 5B2 — Saratoga County
Saratoga Springs · elev 434 ft
- KSCH — Schenectady County
Schenectady · elev 378 ft
- KALB — Albany International
Albany · elev 285 ft
- B04 — Garnseys
Schuylerville · elev 100 ft
- K30 — Heber Airpark
Gansevoort · elev 230 ft
- 5B7 — Rensselaer County
Troy · elev 440 ft
- 4B1 — Duanesburg
Duanesburg · elev 714 ft
- 1B8 — Chapin Field
Cambridge · elev 510 ft
Frequently asked questions
How high does density altitude get at W57 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Round Lake reaches roughly 1,822 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 W57 on an average day?
It swings with the seasons: from roughly −2,229 ft at the coldest month's average temperature to about 1,105 ft at the warmest month's — all from a constant field elevation of 178 ft. The month-by-month table above carries the full year.
What is the field elevation of Round Lake?
178 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is W57 (FAA), in Round Lake, New York.