Bennettsville, South Carolina · field elev 147 ft
Density Altitude at Marlboro County Jetport/H E Avent Field (KBBP)
Marlboro County Jetport/H E Avent Field sits at 147 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,197 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 | 42.8 | −887 ft | 54.3 | −111 ft |
| February | 45.9 | −676 ft | 57.7 | 114 ft |
| March | 52.8 | −211 ft | 65.1 | 598 ft |
| April | 61.7 | 377 ft | 74.2 | 1,182 ft |
| May | 69.6 | 888 ft | 81.0 | 1,610 ft |
| June | 77.1 | 1,365 ft | 87.5 | 2,013 ft |
| July | 80.5 | 1,579 ft | 90.5 | 2,197 ft |
| August | 79.0 | 1,485 ft | 88.6 | 2,081 ft |
| September | 73.3 | 1,125 ft | 83.3 | 1,753 ft |
| October | 62.7 | 442 ft | 74.3 | 1,188 ft |
| November | 52.3 | −245 ft | 64.6 | 566 ft |
| December | 45.6 | −696 ft | 56.9 | 61 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 KBBP
DENSITY ALTITUDE
Field elevation 147 ft — the air behaves like 2,228 ft.
- PRESSURE ALT
- 148 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
- 9W9 — Clio Crop Care
Clio · elev 192 ft
- KCQW — Cheraw Municipal/Lynch Bellinger Field
Cheraw · elev 239 ft
- KUDG — Darlington County
Darlington · elev 192 ft
- 2Q0 — Flying W
Hartsville · elev 292 ft
- KDLC — Dillon County
Dillon · elev 133 ft
- 6J7 — Branhams
Darlington · elev 166 ft
- KHVS — Hartsville Regional
Hartsville · elev 364 ft
- KFLO — Florence Regional
Florence · elev 147 ft
Frequently asked questions
How high does density altitude get at KBBP in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Marlboro County Jetport/H E Avent Field reaches roughly 2,197 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 KBBP on an average day?
It swings with the seasons: from roughly −887 ft at the coldest month's average temperature to about 1,579 ft at the warmest month's — all from a constant field elevation of 147 ft. The month-by-month table above carries the full year.
What is the field elevation of Marlboro County Jetport/H E Avent Field?
147 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBBP (ICAO) / BBP (FAA), in Bennettsville, South Carolina.