Martinsville, Virginia · field elev 948 ft
Density Altitude at Blue Ridge (KMTV)
Blue Ridge sits at 948 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 3,020 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 | 36.1 | −350 ft | 48.4 | 487 ft |
| February | 38.9 | −157 ft | 52.2 | 740 ft |
| March | 45.9 | 319 ft | 60.3 | 1,273 ft |
| April | 55.6 | 965 ft | 70.8 | 1,948 ft |
| May | 64.0 | 1,513 ft | 77.7 | 2,383 ft |
| June | 72.0 | 2,024 ft | 84.7 | 2,817 ft |
| July | 76.0 | 2,277 ft | 88.0 | 3,020 ft |
| August | 74.2 | 2,163 ft | 85.9 | 2,891 ft |
| September | 67.6 | 1,744 ft | 79.8 | 2,514 ft |
| October | 56.7 | 1,037 ft | 70.7 | 1,942 ft |
| November | 46.0 | 325 ft | 60.3 | 1,273 ft |
| December | 38.7 | −171 ft | 51.1 | 667 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 KMTV
DENSITY ALTITUDE
Field elevation 948 ft — the air behaves like 3,020 ft.
- PRESSURE ALT
- 949 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 Virginia fields
- KDAN — Danville Regional
Danville · elev 571 ft
- W91 — Smith Mountain Lake
Moneta · elev 892 ft
- KBCB — Virginia Tech/Montgomery Exec
Blacksburg · elev 2,119 ft
- KHLX — Twin County
Galax Hillsville · elev 2,694 ft
- KROA — Roanoke/Blacksburg Regional (Woodrum Field)
Roanoke · elev 1,175 ft
- KPSK — New River Valley
Dublin · elev 2,105 ft
- W90 — New London
Forest · elev 842 ft
- W78 — William M Tuck
South Boston · elev 420 ft
Frequently asked questions
How high does density altitude get at KMTV in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Blue Ridge reaches roughly 3,020 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 KMTV on an average day?
It swings with the seasons: from roughly −350 ft at the coldest month's average temperature to about 2,277 ft at the warmest month's — all from a constant field elevation of 948 ft. The month-by-month table above carries the full year.
What is the field elevation of Blue Ridge?
948 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMTV (ICAO) / MTV (FAA), in Martinsville, Virginia.