Star, North Carolina · field elev 633 ft
Density Altitude at Montgomery County (43A)
Montgomery County sits at 633 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,746 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 | 42.1 | −330 ft | 51.6 | 311 ft |
| February | 45.3 | −113 ft | 55.4 | 563 ft |
| March | 52.3 | 357 ft | 63.1 | 1,067 ft |
| April | 61.2 | 943 ft | 72.6 | 1,676 ft |
| May | 69.1 | 1,453 ft | 79.7 | 2,123 ft |
| June | 76.6 | 1,929 ft | 86.6 | 2,550 ft |
| July | 79.9 | 2,135 ft | 89.8 | 2,746 ft |
| August | 78.4 | 2,042 ft | 87.9 | 2,630 ft |
| September | 72.8 | 1,689 ft | 82.5 | 2,297 ft |
| October | 62.3 | 1,015 ft | 72.6 | 1,676 ft |
| November | 52.4 | 364 ft | 62.6 | 1,034 ft |
| December | 45.3 | −113 ft | 54.6 | 510 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 43A
DENSITY ALTITUDE
Field elevation 633 ft — the air behaves like 2,758 ft.
- PRESSURE ALT
- 634 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
- N26 — Derby Aerodrome
Pinehurst · elev 516 ft
- KHBI — Asheboro Regional
Asheboro · elev 671 ft
- BQ1 — Gilliam - Mc Connell Airfield
Carthage · elev 445 ft
- KVUJ — Stanly County
Albemarle · elev 609 ft
- KSOP — Moore County
Pinehurst/Southern Pines · elev 459 ft
- KSCR — Siler City Municipal
Siler City · elev 616 ft
- KAFP — Anson County/Jeff Cloud Field
Wadesboro · elev 300 ft
- KRCZ — Richmond County
Rockingham · elev 358 ft
Frequently asked questions
How high does density altitude get at 43A in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Montgomery County reaches roughly 2,746 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 43A on an average day?
It swings with the seasons: from roughly −330 ft at the coldest month's average temperature to about 2,135 ft at the warmest month's — all from a constant field elevation of 633 ft. The month-by-month table above carries the full year.
What is the field elevation of Montgomery County?
633 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 43A (FAA), in Star, North Carolina.