Kapolei, Hawaii · field elev 32 ft
Density Altitude at Kalaeloa (John Rodgers Field) (PHJR)
Kalaeloa (John Rodgers Field) sits at 32 ft, and even a typical August afternoon (89 °F) only lifts density altitude to about 1,971 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 | 72.8 | 952 ft | 80.9 | 1,463 ft |
| February | 73.0 | 964 ft | 80.9 | 1,463 ft |
| March | 73.8 | 1,015 ft | 81.6 | 1,507 ft |
| April | 75.7 | 1,136 ft | 83.6 | 1,631 ft |
| May | 76.9 | 1,212 ft | 84.9 | 1,712 ft |
| June | 79.3 | 1,363 ft | 87.3 | 1,861 ft |
| July | 80.3 | 1,426 ft | 88.0 | 1,904 ft |
| August | 81.1 | 1,476 ft | 89.1 | 1,971 ft |
| September | 80.7 | 1,451 ft | 88.9 | 1,959 ft |
| October | 79.5 | 1,375 ft | 87.3 | 1,861 ft |
| November | 76.8 | 1,205 ft | 84.1 | 1,663 ft |
| December | 74.5 | 1,060 ft | 82.1 | 1,538 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 PHJR
DENSITY ALTITUDE
Field elevation 32 ft — the air behaves like 1,965 ft.
- PRESSURE ALT
- 33 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
- PHNL — Daniel K Inouye International
Honolulu · elev 14 ft
- PHDH — Kawaihapai Airfield
Mokuleia · elev 14 ft
- PHMK — Molokai
Kaunakakai · elev 454 ft
- PHLU — Kalaupapa
Kalaupapa · elev 24 ft
- PHNY — Lanai
Lanai City · elev 1,308 ft
- PHLI — Lihue
Lihue · elev 152 ft
- PHPA — Port Allen
Hanapepe · elev 24 ft
- PHOG — Kahului
Kahului · elev 55 ft
Frequently asked questions
How high does density altitude get at PHJR in summer?
On a typical August afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Kalaeloa (John Rodgers Field) reaches roughly 1,971 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 PHJR on an average day?
It swings with the seasons: from roughly 952 ft at the coldest month's average temperature to about 1,476 ft at the warmest month's — all from a constant field elevation of 32 ft. The month-by-month table above carries the full year.
What is the field elevation of Kalaeloa (John Rodgers Field)?
32 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PHJR (ICAO) / JRF (FAA), in Kapolei, Hawaii.