False Pass, Alaska · field elev 18 ft
Density Altitude at False Pass (PAKF)
False Pass sits at 18 ft, and even its warmest typical afternoon (August, 57 °F) leaves density altitude around −78 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 | 28.4 | −2,051 ft | 33.2 | −1,713 ft |
| February | 30.2 | −1,924 ft | 35.0 | −1,587 ft |
| March | 29.9 | −1,945 ft | 35.4 | −1,559 ft |
| April | 35.0 | −1,587 ft | 40.2 | −1,226 ft |
| May | 41.0 | −1,171 ft | 46.5 | −795 ft |
| June | 47.1 | −754 ft | 52.1 | −418 ft |
| July | 51.5 | −458 ft | 56.2 | −145 ft |
| August | 52.6 | −384 ft | 57.2 | −78 ft |
| September | 48.4 | −666 ft | 53.4 | −331 ft |
| October | 41.3 | −1,150 ft | 46.5 | −795 ft |
| November | 35.3 | −1,566 ft | 39.9 | −1,247 ft |
| December | 30.8 | −1,881 ft | 35.6 | −1,545 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 PAKF
DENSITY ALTITUDE
Field elevation 18 ft — the air behaves like −92 ft.
- PRESSURE ALT
- 19 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
- PACD — Cold Bay
Cold Bay · elev 100 ft
- PAVC — King Cove
King Cove · elev 149 ft
- PAUT — Akutan
Akutan · elev 129 ft
- PASD — Sand Point
Sand Point · elev 24 ft
- PAOU — Nelson Lagoon
Nelson Lagoon · elev 14 ft
- PADU — Unalaska
Unalaska · elev 23 ft
- Z52 — Johnsons Landing
Bear Lake · elev 130 ft
- PAPE — Perryville
Perryville · elev 30 ft
Frequently asked questions
How high does density altitude get at PAKF in summer?
On a typical August afternoon — around 57 °F at the nearest NOAA normals station — density altitude at False Pass reaches roughly −78 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 PAKF on an average day?
It swings with the seasons: from roughly −2,051 ft at the coldest month's average temperature to about −384 ft at the warmest month's — all from a constant field elevation of 18 ft. The month-by-month table above carries the full year.
What is the field elevation of False Pass?
18 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PAKF (ICAO) / KFP (FAA), in False Pass, Alaska.