Hyannis, Massachusetts · field elev 54 ft
Density Altitude at Cape Cod Gateway (KHYA)
Cape Cod Gateway sits at 54 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 1,484 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 | 32.0 | −1,752 ft | 39.9 | −1,202 ft |
| February | 32.9 | −1,689 ft | 41.0 | −1,126 ft |
| March | 38.1 | −1,326 ft | 45.9 | −791 ft |
| April | 46.9 | −723 ft | 55.2 | −166 ft |
| May | 56.5 | −80 ft | 65.0 | 477 ft |
| June | 65.7 | 522 ft | 73.9 | 1,049 ft |
| July | 72.8 | 979 ft | 80.8 | 1,484 ft |
| August | 71.6 | 902 ft | 79.7 | 1,415 ft |
| September | 64.4 | 438 ft | 73.1 | 998 ft |
| October | 54.5 | −213 ft | 63.4 | 373 ft |
| November | 45.4 | −825 ft | 53.5 | −280 ft |
| December | 37.2 | −1,389 ft | 45.2 | −839 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 KHYA
DENSITY ALTITUDE
Field elevation 54 ft — the air behaves like 1,496 ft.
- PRESSURE ALT
- 55 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 Massachusetts fields
- 2B1 — Cape Cod
Marston Mills · elev 103 ft
- 5B6 — Falmouth Airpark
Falmouth · elev 41 ft
- KCQX — Chatham Municipal
Chatham · elev 64 ft
- 1B2 — Katama Airpark
Edgartown · elev 18 ft
- KMVY — Martha'S Vineyard
Vineyard Haven · elev 67 ft
- KPVC — Provincetown Municipal
Provincetown · elev 8 ft
- KPYM — Plymouth Municipal
Plymouth · elev 148 ft
- KACK — Nantucket Meml
Nantucket · elev 47 ft
Frequently asked questions
How high does density altitude get at KHYA in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Cape Cod Gateway reaches roughly 1,484 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 KHYA on an average day?
It swings with the seasons: from roughly −1,752 ft at the coldest month's average temperature to about 979 ft at the warmest month's — all from a constant field elevation of 54 ft. The month-by-month table above carries the full year.
What is the field elevation of Cape Cod Gateway?
54 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHYA (ICAO) / HYA (FAA), in Hyannis, Massachusetts.