Kwethluk, Alaska · field elev 25 ft
Density Altitude at Kwethluk (PFKW)
Kwethluk sits at 25 ft, and even a typical July afternoon (64 °F) only lifts density altitude to about 350 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 | 6.9 | −3,611 ft | 12.7 | −3,179 ft |
| February | 13.3 | −3,135 ft | 20.1 | −2,638 ft |
| March | 14.5 | −3,047 ft | 22.0 | −2,500 ft |
| April | 29.0 | −2,000 ft | 36.9 | −1,446 ft |
| May | 43.0 | −1,025 ft | 52.0 | −416 ft |
| June | 53.3 | −329 ft | 62.1 | 252 ft |
| July | 56.3 | −129 ft | 63.6 | 350 ft |
| August | 53.9 | −289 ft | 60.5 | 148 ft |
| September | 46.1 | −814 ft | 52.7 | −369 ft |
| October | 32.2 | −1,774 ft | 37.9 | −1,376 ft |
| November | 18.5 | −2,754 ft | 24.3 | −2,335 ft |
| December | 10.0 | −3,380 ft | 16.3 | −2,915 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 PFKW
DENSITY ALTITUDE
Field elevation 25 ft — the air behaves like 376 ft.
- PRESSURE ALT
- 26 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
- PFZK — Akiachak
Akiachak · elev 23 ft
- PFAK — Akiak
Akiak · elev 40 ft
- PAPK — Napaskiak
Napaskiak · elev 11 ft
- PABE — Bethel
Bethel · elev 129 ft
- PANA — Napakiak
Napakiak · elev 17 ft
- PALT — Tuluksak
Tuluksak · elev 36 ft
- PAAB — Atmautluak
Atmautluak · elev 19 ft
- PPIT — Nunapitchuk
Nunapitchuk · elev 22 ft
Frequently asked questions
How high does density altitude get at PFKW in summer?
On a typical July afternoon — around 64 °F at the nearest NOAA normals station — density altitude at Kwethluk reaches roughly 350 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 PFKW on an average day?
It swings with the seasons: from roughly −3,611 ft at the coldest month's average temperature to about −129 ft at the warmest month's — all from a constant field elevation of 25 ft. The month-by-month table above carries the full year.
What is the field elevation of Kwethluk?
25 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PFKW (ICAO) / KWT (FAA), in Kwethluk, Alaska.