Morganton, North Carolina · field elev 1,270 ft
Density Altitude at Foothills Regional (KMRN)
Foothills Regional sits at 1,270 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 3,393 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 | 38.7 | 230 ft | 49.4 | 952 ft |
| February | 41.8 | 441 ft | 53.4 | 1,218 ft |
| March | 48.7 | 906 ft | 60.8 | 1,702 ft |
| April | 57.7 | 1,500 ft | 70.6 | 2,330 ft |
| May | 65.8 | 2,024 ft | 77.9 | 2,789 ft |
| June | 73.3 | 2,501 ft | 84.5 | 3,198 ft |
| July | 76.9 | 2,727 ft | 87.7 | 3,393 ft |
| August | 75.4 | 2,633 ft | 85.9 | 3,283 ft |
| September | 69.3 | 2,248 ft | 80.0 | 2,920 ft |
| October | 58.5 | 1,552 ft | 70.9 | 2,349 ft |
| November | 47.9 | 852 ft | 60.6 | 1,689 ft |
| December | 41.1 | 393 ft | 51.8 | 1,112 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 KMRN
DENSITY ALTITUDE
Field elevation 1,270 ft — the air behaves like 3,412 ft.
- PRESSURE ALT
- 1,271 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
- KHKY — Hickory Regional
Hickory · elev 1,190 ft
- E40 — Wilson'S
Hickory · elev 985 ft
- 7A8 — Avery County/Morrison Field
Spruce Pine · elev 2,745 ft
- 9A9 — Shiflet Field
Marion · elev 1,212 ft
- NC2 — Taylorsville
Taylorsville · elev 1,090 ft
- N92 — Laneys
Maiden · elev 1,025 ft
- KFQD — Rutherford County/Marchman Field
Rutherfordton · elev 1,077 ft
- KIPJ — Lincoln County Regional
Lincolnton · elev 878 ft
Frequently asked questions
How high does density altitude get at KMRN in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Foothills Regional reaches roughly 3,393 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 KMRN on an average day?
It swings with the seasons: from roughly 230 ft at the coldest month's average temperature to about 2,727 ft at the warmest month's — all from a constant field elevation of 1,270 ft. The month-by-month table above carries the full year.
What is the field elevation of Foothills Regional?
1,270 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMRN (ICAO) / MRN (FAA), in Morganton, North Carolina.