Chalkyitsik, Alaska · field elev 549 ft
Density Altitude at Chalkyitsik (PACI)
Chalkyitsik sits at 549 ft, and even a typical July afternoon (73 °F) only lifts density altitude to about 1,611 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 | −15.7 | −4,689 ft | −7.4 | −4,037 ft |
| February | −7.8 | −4,068 ft | 3.2 | −3,226 ft |
| March | 1.1 | −3,385 ft | 16.5 | −2,240 ft |
| April | 26.7 | −1,507 ft | 41.8 | −455 ft |
| May | 47.0 | −102 ft | 59.9 | 755 ft |
| June | 59.3 | 716 ft | 72.3 | 1,554 ft |
| July | 61.0 | 827 ft | 73.2 | 1,611 ft |
| August | 54.2 | 379 ft | 66.3 | 1,170 ft |
| September | 41.5 | −476 ft | 53.0 | 300 ft |
| October | 20.4 | −1,957 ft | 28.6 | −1,372 ft |
| November | −2.8 | −3,682 ft | 4.9 | −3,098 ft |
| December | −9.1 | −4,169 ft | −1.4 | −3,575 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 PACI
DENSITY ALTITUDE
Field elevation 549 ft — the air behaves like 1,599 ft.
- PRESSURE ALT
- 550 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
- PFYU — Fort Yukon
Fort Yukon · elev 447 ft
- PACR — Circle City
Circle · elev 613 ft
- PAAR — Birch Creek
Birch Creek · elev 440 ft
- PAVE — Venetie
Venetie · elev 574 ft
- PACE — Central
Central · elev 937 ft
- CHP — Circle Hot Springs
Circle Hot Springs · elev 870 ft
- L20 — Coal Creek
Yukon Charley Rivers · elev 867 ft
- PAWB — Beaver
Beaver · elev 365 ft
Frequently asked questions
How high does density altitude get at PACI in summer?
On a typical July afternoon — around 73 °F at the nearest NOAA normals station — density altitude at Chalkyitsik reaches roughly 1,611 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 PACI on an average day?
It swings with the seasons: from roughly −4,689 ft at the coldest month's average temperature to about 827 ft at the warmest month's — all from a constant field elevation of 549 ft. The month-by-month table above carries the full year.
What is the field elevation of Chalkyitsik?
549 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PACI (ICAO) / CIK (FAA), in Chalkyitsik, Alaska.