Stillwater, Oklahoma · field elev 1,000 ft
Density Altitude at Stillwater Regional (KSWO)
Stillwater Regional sits at 1,000 ft, and even a typical July afternoon (95 °F) only lifts density altitude to about 3,531 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 | 38.7 | −106 ft | 50.7 | 705 ft |
| February | 43.1 | 194 ft | 55.5 | 1,023 ft |
| March | 52.1 | 798 ft | 64.8 | 1,628 ft |
| April | 60.9 | 1,376 ft | 73.4 | 2,177 ft |
| May | 69.7 | 1,942 ft | 80.9 | 2,646 ft |
| June | 78.6 | 2,503 ft | 89.6 | 3,181 ft |
| July | 83.7 | 2,819 ft | 95.4 | 3,531 ft |
| August | 82.7 | 2,757 ft | 95.0 | 3,507 ft |
| September | 74.3 | 2,233 ft | 86.7 | 3,004 ft |
| October | 62.3 | 1,467 ft | 75.3 | 2,296 ft |
| November | 50.3 | 678 ft | 62.8 | 1,499 ft |
| December | 40.9 | 44 ft | 52.3 | 811 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 KSWO
DENSITY ALTITUDE
Field elevation 1,000 ft — the air behaves like 3,507 ft.
- PRESSURE ALT
- 1,001 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 Oklahoma fields
- F22 — Perry Municipal
Perry · elev 1,003 ft
- H97 — Pawnee Municipal
Pawnee · elev 875 ft
- KCUH — Cushing Municipal
Cushing · elev 925 ft
- KGOK — Guthrie/Edmond Regional
Guthrie · elev 1,069 ft
- KCQB — Chandler Regional
Chandler · elev 985 ft
- 3OK — Biggs Airport
Wellston · elev 1,000 ft
- KSUD — Stroud Municipal
Stroud · elev 901 ft
- 1OK — Fairmont Field
Fairmont · elev 1,170 ft
Frequently asked questions
How high does density altitude get at KSWO in summer?
On a typical July afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Stillwater Regional reaches roughly 3,531 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 KSWO on an average day?
It swings with the seasons: from roughly −106 ft at the coldest month's average temperature to about 2,819 ft at the warmest month's — all from a constant field elevation of 1,000 ft. The month-by-month table above carries the full year.
What is the field elevation of Stillwater Regional?
1,000 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSWO (ICAO) / SWO (FAA), in Stillwater, Oklahoma.