Colfax, Washington · field elev 2,181 ft
Density Altitude at Port Of Whitman Business Air Center (S94)
Port Of Whitman Business Air Center sits at 2,181 ft, and even a typical August afternoon (85 °F) only lifts density altitude to about 4,356 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 | 31.6 | 876 ft | 37.7 | 1,294 ft |
| February | 34.5 | 1,076 ft | 42.0 | 1,585 ft |
| March | 40.3 | 1,471 ft | 49.5 | 2,086 ft |
| April | 46.3 | 1,873 ft | 57.1 | 2,584 ft |
| May | 54.2 | 2,395 ft | 66.4 | 3,181 ft |
| June | 59.5 | 2,739 ft | 72.6 | 3,572 ft |
| July | 67.2 | 3,232 ft | 84.1 | 4,283 ft |
| August | 67.7 | 3,264 ft | 85.3 | 4,356 ft |
| September | 60.0 | 2,772 ft | 75.8 | 3,772 ft |
| October | 48.5 | 2,020 ft | 60.7 | 2,817 ft |
| November | 38.0 | 1,315 ft | 45.5 | 1,820 ft |
| December | 31.0 | 834 ft | 36.9 | 1,240 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 S94
DENSITY ALTITUDE
Field elevation 2,181 ft — the air behaves like 4,337 ft.
- PRESSURE ALT
- 2,182 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 Washington fields
- 00W — Lower Granite State
Colfax · elev 719 ft
- KPUW — Pullman/Moscow Regional
Pullman/Moscow · elev 2,567 ft
- 72S — Rosalia Municipal
Rosalia · elev 2,170 ft
- 73S — Willard Field
Tekoa · elev 2,520 ft
- 16W — Little Goose Lock And Dam
Starbuck · elev 681 ft
- 33S — Pru Field
Ritzville · elev 1,801 ft
- KGEG — Spokane International
Spokane · elev 2,385 ft
- 0S0 — Lind
Lind · elev 1,507 ft
Frequently asked questions
How high does density altitude get at S94 in summer?
On a typical August afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Port Of Whitman Business Air Center reaches roughly 4,356 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 S94 on an average day?
It swings with the seasons: from roughly 834 ft at the coldest month's average temperature to about 3,264 ft at the warmest month's — all from a constant field elevation of 2,181 ft. The month-by-month table above carries the full year.
What is the field elevation of Port Of Whitman Business Air Center?
2,181 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S94 (FAA), in Colfax, Washington.