Brookings, South Dakota · field elev 1,648 ft
Density Altitude at Brookings Regional (KBKX)
Brookings Regional sits at 1,648 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 3,468 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 | 12.8 | −1,126 ft | 22.2 | −449 ft |
| February | 17.1 | −814 ft | 26.9 | −117 ft |
| March | 29.5 | 65 ft | 39.1 | 727 ft |
| April | 43.1 | 998 ft | 54.1 | 1,731 ft |
| May | 56.0 | 1,855 ft | 66.8 | 2,553 ft |
| June | 66.6 | 2,540 ft | 76.8 | 3,183 ft |
| July | 70.7 | 2,800 ft | 81.4 | 3,468 ft |
| August | 68.4 | 2,654 ft | 79.3 | 3,338 ft |
| September | 60.1 | 2,122 ft | 72.0 | 2,882 ft |
| October | 45.9 | 1,187 ft | 57.6 | 1,960 ft |
| November | 31.2 | 183 ft | 41.0 | 856 ft |
| December | 18.6 | −707 ft | 27.5 | −75 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 KBKX
DENSITY ALTITUDE
Field elevation 1,648 ft — the air behaves like 3,443 ft.
- PRESSURE ALT
- 1,649 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 South Dakota fields
- 3A9 — Arlington Municipal
Arlington · elev 1,818 ft
- 4P3 — Flandreau Municipal
Flandreau · elev 1,645 ft
- KMDS — Madison Municipal
Madison · elev 1,718 ft
- 6E5 — Wilder
Desmet · elev 1,730 ft
- 8D9 — Howard Municipal
Howard · elev 1,586 ft
- KATY — Watertown Regional
Watertown · elev 1,749 ft
- KFSD — Joe Foss Field
Sioux Falls · elev 1,430 ft
- Y14 — Marv Skie-Lincoln County
Tea · elev 1,511 ft
Frequently asked questions
How high does density altitude get at KBKX in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Brookings Regional reaches roughly 3,468 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 KBKX on an average day?
It swings with the seasons: from roughly −1,126 ft at the coldest month's average temperature to about 2,800 ft at the warmest month's — all from a constant field elevation of 1,648 ft. The month-by-month table above carries the full year.
What is the field elevation of Brookings Regional?
1,648 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBKX (ICAO) / BKX (FAA), in Brookings, South Dakota.