Basin Creek, Alaska · field elev 143 ft
Density Altitude at Engstrom Field (Z47)
Engstrom Field sits at 143 ft, and even its warmest typical afternoon (July, 58 °F) leaves density altitude around 109 ft — below the field elevation itself. Cold, dense air is the norm here; watch for the opposite altimetry problem on cold days instead.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 5.6 | −3,560 ft | 13.2 | −2,994 ft |
| February | 9.0 | −3,305 ft | 16.8 | −2,729 ft |
| March | 9.6 | −3,260 ft | 17.6 | −2,671 ft |
| April | 22.7 | −2,302 ft | 29.4 | −1,824 ft |
| May | 37.3 | −1,271 ft | 43.6 | −837 ft |
| June | 48.3 | −518 ft | 55.1 | −63 ft |
| July | 52.0 | −270 ft | 57.7 | 109 ft |
| August | 50.2 | −390 ft | 56.0 | −3 ft |
| September | 43.1 | −871 ft | 49.0 | −471 ft |
| October | 30.4 | −1,753 ft | 36.0 | −1,361 ft |
| November | 18.2 | −2,627 ft | 24.3 | −2,187 ft |
| December | 9.1 | −3,298 ft | 16.2 | −2,773 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 Z47
DENSITY ALTITUDE
Field elevation 143 ft — the air behaves like 129 ft.
- PRESSURE ALT
- 144 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 Alaska fields
- 94Z — Nome City Field
Nome · elev 69 ft
- PAOM — Nome
Nome · elev 41 ft
- Z81 — Salmon Lake
Salmon Lake · elev 509 ft
- 3Z1 — Feather River
Feather River · elev 325 ft
- PATE — Teller
Teller · elev 299 ft
- K29 — Council
Council · elev 100 ft
- 5QC — Quartz Creek / Kougarok
Quartz Creek · elev 416 ft
- PAWM — White Mountain
White Mountain · elev 267 ft
Frequently asked questions
How high does density altitude get at Z47 in summer?
On a typical July afternoon — around 58 °F at the nearest NOAA normals station — density altitude at Engstrom Field reaches roughly 109 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 Z47 on an average day?
It swings with the seasons: from roughly −3,560 ft at the coldest month's average temperature to about −270 ft at the warmest month's — all from a constant field elevation of 143 ft. The month-by-month table above carries the full year.
What is the field elevation of Engstrom Field?
143 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Z47 (FAA), in Basin Creek, Alaska.