Hanapepe, Hawaii · field elev 24 ft
Density Altitude at Port Allen (PHPA)
Port Allen sits at 24 ft, and even a typical August afternoon (87 °F) only lifts density altitude to about 1,851 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 | 72.1 | 897 ft | 79.9 | 1,391 ft |
| February | 72.1 | 897 ft | 79.6 | 1,372 ft |
| March | 72.6 | 929 ft | 80.1 | 1,403 ft |
| April | 74.2 | 1,031 ft | 81.3 | 1,478 ft |
| May | 75.9 | 1,139 ft | 83.0 | 1,584 ft |
| June | 78.2 | 1,284 ft | 85.4 | 1,733 ft |
| July | 79.3 | 1,353 ft | 86.2 | 1,783 ft |
| August | 79.9 | 1,391 ft | 87.3 | 1,851 ft |
| September | 79.6 | 1,372 ft | 86.9 | 1,826 ft |
| October | 78.6 | 1,309 ft | 85.7 | 1,752 ft |
| November | 75.8 | 1,132 ft | 83.0 | 1,584 ft |
| December | 73.9 | 1,012 ft | 81.1 | 1,466 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 PHPA
DENSITY ALTITUDE
Field elevation 24 ft — the air behaves like 1,832 ft.
- PRESSURE ALT
- 25 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 Hawaii fields
- PHLI — Lihue
Lihue · elev 152 ft
- PHDH — Kawaihapai Airfield
Mokuleia · elev 14 ft
- PHJR — Kalaeloa (John Rodgers Field)
Kapolei · elev 32 ft
- PHNL — Daniel K Inouye International
Honolulu · elev 14 ft
- PHMK — Molokai
Kaunakakai · elev 454 ft
- PHLU — Kalaupapa
Kalaupapa · elev 24 ft
- PHNY — Lanai
Lanai City · elev 1,308 ft
- PHOG — Kahului
Kahului · elev 55 ft
Frequently asked questions
How high does density altitude get at PHPA in summer?
On a typical August afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Port Allen reaches roughly 1,851 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 PHPA on an average day?
It swings with the seasons: from roughly 897 ft at the coldest month's average temperature to about 1,391 ft at the warmest month's — all from a constant field elevation of 24 ft. The month-by-month table above carries the full year.
What is the field elevation of Port Allen?
24 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PHPA (ICAO) / PAK (FAA), in Hanapepe, Hawaii.