Carthage, North Carolina · field elev 445 ft
Density Altitude at Gilliam - Mc Connell Airfield (BQ1)
Gilliam - Mc Connell Airfield sits at 445 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,548 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 | 41.6 | −598 ft | 52.6 | 144 ft |
| February | 44.0 | −434 ft | 55.7 | 350 ft |
| March | 52.6 | 144 ft | 65.2 | 971 ft |
| April | 60.0 | 633 ft | 73.2 | 1,484 ft |
| May | 68.5 | 1,184 ft | 80.4 | 1,937 ft |
| June | 76.0 | 1,661 ft | 86.7 | 2,327 ft |
| July | 79.7 | 1,893 ft | 90.3 | 2,548 ft |
| August | 77.6 | 1,762 ft | 87.8 | 2,395 ft |
| September | 72.1 | 1,414 ft | 83.3 | 2,117 ft |
| October | 61.1 | 705 ft | 73.0 | 1,471 ft |
| November | 51.4 | 64 ft | 64.0 | 894 ft |
| December | 44.2 | −421 ft | 55.2 | 317 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 BQ1
DENSITY ALTITUDE
Field elevation 445 ft — the air behaves like 2,529 ft.
- PRESSURE ALT
- 446 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 North Carolina fields
- KSOP — Moore County
Pinehurst/Southern Pines · elev 459 ft
- N26 — Derby Aerodrome
Pinehurst · elev 516 ft
- 43A — Montgomery County
Star · elev 633 ft
- KTTA — Raleigh Exec Jetport At Sanford-Lee County
Sanford · elev 247 ft
- KSCR — Siler City Municipal
Siler City · elev 616 ft
- 5W4 — P K Airpark
Raeford · elev 304 ft
- KHBI — Asheboro Regional
Asheboro · elev 671 ft
- KRCZ — Richmond County
Rockingham · elev 358 ft
Frequently asked questions
How high does density altitude get at BQ1 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Gilliam - Mc Connell Airfield reaches roughly 2,548 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 BQ1 on an average day?
It swings with the seasons: from roughly −598 ft at the coldest month's average temperature to about 1,893 ft at the warmest month's — all from a constant field elevation of 445 ft. The month-by-month table above carries the full year.
What is the field elevation of Gilliam - Mc Connell Airfield?
445 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is BQ1 (FAA), in Carthage, North Carolina.