Goose Bay, Alaska · field elev 78 ft
Density Altitude at Goose Bay (Z40)
Goose Bay sits at 78 ft, and even a typical July afternoon (68 °F) only lifts density altitude to about 726 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 | 15.4 | −2,914 ft | 22.6 | −2,391 ft |
| February | 20.2 | −2,564 ft | 28.0 | −2,004 ft |
| March | 25.6 | −2,175 ft | 34.4 | −1,554 ft |
| April | 38.8 | −1,248 ft | 47.1 | −680 ft |
| May | 49.7 | −504 ft | 58.4 | 75 ft |
| June | 57.7 | 29 ft | 65.7 | 552 ft |
| July | 61.1 | 252 ft | 68.4 | 726 ft |
| August | 58.5 | 82 ft | 65.7 | 552 ft |
| September | 49.8 | −498 ft | 56.8 | −31 ft |
| October | 36.4 | −1,414 ft | 42.5 | −993 ft |
| November | 22.6 | −2,391 ft | 29.0 | −1,934 ft |
| December | 18.0 | −2,724 ft | 24.7 | −2,240 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 Z40
DENSITY ALTITUDE
Field elevation 78 ft — the air behaves like 701 ft.
- PRESSURE ALT
- 79 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
- PAGQ — Big Lake
Big Lake · elev 162 ft
- PABV — Birchwood
Birchwood · elev 83 ft
- PAMR — Merrill Field
Anchorage · elev 143 ft
- PALH — Lake Hood
Anchorage · elev 79 ft
- PAWS — Wasilla
Wasilla · elev 354 ft
- PANC — Ted Stevens Anchorage International
Anchorage · elev 151 ft
- PAUO — Willow
Willow · elev 215 ft
- A13 — Bold
Anchorage · elev 900 ft
Frequently asked questions
How high does density altitude get at Z40 in summer?
On a typical July afternoon — around 68 °F at the nearest NOAA normals station — density altitude at Goose Bay reaches roughly 726 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 Z40 on an average day?
It swings with the seasons: from roughly −2,914 ft at the coldest month's average temperature to about 252 ft at the warmest month's — all from a constant field elevation of 78 ft. The month-by-month table above carries the full year.
What is the field elevation of Goose Bay?
78 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Z40 (FAA), in Goose Bay, Alaska.