Beaufort, North Carolina · field elev 10 ft
Density Altitude at Michael J Smith Field (KMRH)
Michael J Smith Field sits at 10 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 1,797 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 | 46.2 | −825 ft | 54.9 | −241 ft |
| February | 48.2 | −690 ft | 57.1 | −95 ft |
| March | 54.0 | −301 ft | 62.9 | 286 ft |
| April | 62.1 | 234 ft | 70.4 | 771 ft |
| May | 70.1 | 752 ft | 77.5 | 1,223 ft |
| June | 77.3 | 1,210 ft | 83.6 | 1,605 ft |
| July | 80.6 | 1,417 ft | 86.7 | 1,797 ft |
| August | 79.5 | 1,348 ft | 85.9 | 1,747 ft |
| September | 75.4 | 1,090 ft | 82.4 | 1,530 ft |
| October | 66.0 | 488 ft | 74.5 | 1,033 ft |
| November | 56.5 | −135 ft | 65.9 | 481 ft |
| December | 50.0 | −569 ft | 58.9 | 24 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 KMRH
DENSITY ALTITUDE
Field elevation 10 ft — the air behaves like 1,815 ft.
- PRESSURE ALT
- 11 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
- KEWN — Coastal Carolina Regional
New Bern · elev 18 ft
- W95 — Ocracoke Island
Ocracoke · elev 4 ft
- N22 — Sky Manor
Jacksonville · elev 60 ft
- KOAJ — Albert J Ellis
Jacksonville · elev 93 ft
- KOCW — Washington-Warren
Washington · elev 38 ft
- 05N — South Oaks Aerodrome
Winterville · elev 50 ft
- KISO — Kinston Regional Jetport At Stallings Field
Kinston · elev 93 ft
- KHSE — Billy Mitchell
Hatteras · elev 16 ft
Frequently asked questions
How high does density altitude get at KMRH in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Michael J Smith Field reaches roughly 1,797 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 KMRH on an average day?
It swings with the seasons: from roughly −825 ft at the coldest month's average temperature to about 1,417 ft at the warmest month's — all from a constant field elevation of 10 ft. The month-by-month table above carries the full year.
What is the field elevation of Michael J Smith Field?
10 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMRH (ICAO) / MRH (FAA), in Beaufort, North Carolina.