Barnwell, South Carolina · field elev 246 ft
Density Altitude at Barnwell Regional (KBNL)
Barnwell Regional sits at 246 ft, and even a typical July afternoon (93 °F) only lifts density altitude to about 2,476 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 | 46.8 | −492 ft | 59.1 | 329 ft |
| February | 50.2 | −263 ft | 63.1 | 590 ft |
| March | 56.4 | 151 ft | 70.1 | 1,042 ft |
| April | 64.1 | 655 ft | 78.1 | 1,549 ft |
| May | 72.4 | 1,189 ft | 85.3 | 1,998 ft |
| June | 78.8 | 1,593 ft | 90.3 | 2,306 ft |
| July | 81.9 | 1,787 ft | 93.1 | 2,476 ft |
| August | 80.8 | 1,719 ft | 91.9 | 2,403 ft |
| September | 75.4 | 1,379 ft | 87.3 | 2,122 ft |
| October | 65.7 | 759 ft | 78.4 | 1,568 ft |
| November | 55.1 | 64 ft | 68.8 | 959 ft |
| December | 49.2 | −330 ft | 61.4 | 479 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 KBNL
DENSITY ALTITUDE
Field elevation 246 ft — the air behaves like 2,470 ft.
- PRESSURE ALT
- 247 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 Carolina fields
- 99N — Bamberg County
Bamberg · elev 231 ft
- KAQX — Allendale County
Allendale · elev 162 ft
- 7S1 — 7 Oaks Flight Park
Fairfax · elev 138 ft
- 1DS — Dry Swamp
Orangeburg · elev 180 ft
- KAIK — Aiken Regional
Aiken · elev 529 ft
- 3J0 — Hampton County
Hampton · elev 112 ft
- KOGB — Orangeburg Municipal
Orangeburg · elev 195 ft
- 6J0 — Lexington County
Pelion · elev 452 ft
Frequently asked questions
How high does density altitude get at KBNL in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Barnwell Regional reaches roughly 2,476 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 KBNL on an average day?
It swings with the seasons: from roughly −492 ft at the coldest month's average temperature to about 1,787 ft at the warmest month's — all from a constant field elevation of 246 ft. The month-by-month table above carries the full year.
What is the field elevation of Barnwell Regional?
246 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBNL (ICAO) / BNL (FAA), in Barnwell, South Carolina.