St Paul Island, Alaska · field elev 66 ft
Density Altitude at St Paul Island (PASN)
St Paul Island sits at 66 ft, and even its warmest typical afternoon (August, 53 °F) leaves density altitude around −298 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 | 25.3 | −2,212 ft | 29.2 | −1,934 ft |
| February | 25.3 | −2,212 ft | 29.4 | −1,920 ft |
| March | 25.1 | −2,226 ft | 29.5 | −1,913 ft |
| April | 30.1 | −1,871 ft | 34.1 | −1,590 ft |
| May | 36.6 | −1,415 ft | 40.8 | −1,125 ft |
| June | 43.1 | −967 ft | 47.5 | −668 ft |
| July | 47.9 | −641 ft | 51.6 | −392 ft |
| August | 49.5 | −533 ft | 53.0 | −298 ft |
| September | 46.0 | −769 ft | 50.1 | −492 ft |
| October | 39.5 | −1,214 ft | 43.6 | −933 ft |
| November | 33.9 | −1,604 ft | 37.7 | −1,339 ft |
| December | 28.9 | −1,956 ft | 33.1 | −1,660 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 PASN
DENSITY ALTITUDE
Field elevation 66 ft — the air behaves like −298 ft.
- PRESSURE ALT
- 67 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
- PAPB — St George
St George · elev 128 ft
- PADU — Unalaska
Unalaska · elev 23 ft
- PAMY — Mekoryuk
Mekoryuk · elev 53 ft
- PAUT — Akutan
Akutan · elev 129 ft
- PAKO — Nikolski As
Nikolski · elev 77 ft
- POKA — Tununak
Tununak · elev 62 ft
- PAKI — Kipnuk
Kipnuk · elev 20 ft
- PAKF — False Pass
False Pass · elev 18 ft
Frequently asked questions
How high does density altitude get at PASN in summer?
On a typical August afternoon — around 53 °F at the nearest NOAA normals station — density altitude at St Paul Island reaches roughly −298 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 PASN on an average day?
It swings with the seasons: from roughly −2,226 ft at the coldest month's average temperature to about −533 ft at the warmest month's — all from a constant field elevation of 66 ft. The month-by-month table above carries the full year.
What is the field elevation of St Paul Island?
66 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PASN (ICAO) / SNP (FAA), in St Paul Island, Alaska.