Maurice, Iowa · field elev 1,409 ft
Density Altitude at Sioux County Regional (KSXK)
Sioux County Regional sits at 1,409 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 3,385 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 | 18.4 | −1,021 ft | 27.4 | −381 ft |
| February | 23.4 | −664 ft | 32.9 | 3 ft |
| March | 35.7 | 197 ft | 46.3 | 917 ft |
| April | 48.7 | 1,078 ft | 61.2 | 1,899 ft |
| May | 60.8 | 1,873 ft | 73.2 | 2,665 ft |
| June | 70.7 | 2,507 ft | 82.4 | 3,238 ft |
| July | 73.3 | 2,671 ft | 84.8 | 3,385 ft |
| August | 70.9 | 2,520 ft | 82.3 | 3,232 ft |
| September | 64.2 | 2,093 ft | 77.1 | 2,909 ft |
| October | 51.1 | 1,237 ft | 63.6 | 2,054 ft |
| November | 35.6 | 190 ft | 45.8 | 884 ft |
| December | 23.0 | −692 ft | 31.5 | −94 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 KSXK
DENSITY ALTITUDE
Field elevation 1,409 ft — the air behaves like 3,398 ft.
- PRESSURE ALT
- 1,410 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 Iowa fields
- KLRJ — Le Mars Municipal
Le Mars · elev 1,197 ft
- KSHL — Sheldon Regional
Sheldon · elev 1,419 ft
- 1Y9 — Paullina Municipal
Paullina · elev 1,385 ft
- KRRQ — Rock Rapids Municipal
Rock Rapids · elev 1,363 ft
- KISB — Sibley Municipal
Sibley · elev 1,538 ft
- 2VA — Zangger Vintage Airpark
Larchwood · elev 1,478 ft
- KCKP — Cherokee County Regional
Cherokee · elev 1,227 ft
- KSUX — Sioux Gateway/Brig General Bud Day Field
Sioux City · elev 1,099 ft
Frequently asked questions
How high does density altitude get at KSXK in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Sioux County Regional reaches roughly 3,385 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 KSXK on an average day?
It swings with the seasons: from roughly −1,021 ft at the coldest month's average temperature to about 2,671 ft at the warmest month's — all from a constant field elevation of 1,409 ft. The month-by-month table above carries the full year.
What is the field elevation of Sioux County Regional?
1,409 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSXK (ICAO) / SXK (FAA), in Maurice, Iowa.