Juneau, Alaska · field elev 25 ft
Density Altitude at Juneau International (PAJN)
Juneau International sits at 25 ft, and even a typical July afternoon (64 °F) only lifts density altitude to about 376 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 | 28.5 | −2,035 ft | 33.1 | −1,711 ft |
| February | 30.1 | −1,922 ft | 35.7 | −1,529 ft |
| March | 32.9 | −1,725 ft | 39.2 | −1,286 ft |
| April | 40.8 | −1,176 ft | 48.7 | −638 ft |
| May | 49.0 | −617 ft | 57.6 | −43 ft |
| June | 54.6 | −242 ft | 62.4 | 272 ft |
| July | 57.0 | −83 ft | 64.0 | 376 ft |
| August | 56.0 | −149 ft | 62.9 | 305 ft |
| September | 50.1 | −543 ft | 56.1 | −143 ft |
| October | 42.2 | −1,080 ft | 47.3 | −732 ft |
| November | 33.8 | −1,662 ft | 38.3 | −1,348 ft |
| December | 30.3 | −1,908 ft | 34.7 | −1,599 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 PAJN
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
- PAOH — Hoonah
Hoonah · elev 22 ft
- PAGS — Gustavus
Gustavus · elev 36 ft
- PAHN — Haines
Haines · elev 29 ft
- PAGY — Skagway
Skagway · elev 44 ft
- PASI — Sitka Rocky Gutierrez
Sitka · elev 27 ft
- PAFE — Kake
Kake · elev 172 ft
- PAPG — Petersburg James A Johnson
Petersburg · elev 113 ft
- AK76 — East Alsek River
Yakutat · elev 39 ft
Frequently asked questions
How high does density altitude get at PAJN in summer?
On a typical July afternoon — around 64 °F at the nearest NOAA normals station — density altitude at Juneau International reaches roughly 376 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 PAJN on an average day?
It swings with the seasons: from roughly −2,035 ft at the coldest month's average temperature to about −83 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 Juneau International?
25 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PAJN (ICAO) / JNU (FAA), in Juneau, Alaska.