Mocksville, North Carolina · field elev 818 ft
Density Altitude at Twin Lakes (8A7)
Twin Lakes sits at 818 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,843 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 | 37.1 | −443 ft | 49.3 | 386 ft |
| February | 40.1 | −237 ft | 53.1 | 639 ft |
| March | 47.1 | 238 ft | 61.0 | 1,158 ft |
| April | 56.3 | 851 ft | 70.5 | 1,770 ft |
| May | 64.8 | 1,404 ft | 77.2 | 2,193 ft |
| June | 72.8 | 1,916 ft | 84.2 | 2,628 ft |
| July | 76.7 | 2,162 ft | 87.7 | 2,843 ft |
| August | 75.5 | 2,086 ft | 86.2 | 2,751 ft |
| September | 69.1 | 1,680 ft | 80.4 | 2,393 ft |
| October | 57.7 | 943 ft | 71.2 | 1,814 ft |
| November | 47.3 | 252 ft | 61.3 | 1,178 ft |
| December | 40.4 | −216 ft | 52.6 | 606 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 8A7
DENSITY ALTITUDE
Field elevation 818 ft — the air behaves like 2,861 ft.
- PRESSURE ALT
- 819 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
- KEXX — Davidson County Exec
Lexington · elev 733 ft
- 80C — Lone Hickory
Yadkinville · elev 1,015 ft
- KRUQ — Mid-Carolina Regional
Salisbury · elev 772 ft
- KINT — Smith Reynolds
Winston Salem · elev 969 ft
- N97 — Hiatt
Thomasville · elev 855 ft
- KSVH — Statesville Regional
Statesville · elev 968 ft
- 78A — Swan Creek
Jonesville · elev 1,137 ft
- KZEF — Elkin Municipal
Elkin · elev 1,067 ft
Frequently asked questions
How high does density altitude get at 8A7 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Twin Lakes reaches roughly 2,843 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 8A7 on an average day?
It swings with the seasons: from roughly −443 ft at the coldest month's average temperature to about 2,162 ft at the warmest month's — all from a constant field elevation of 818 ft. The month-by-month table above carries the full year.
What is the field elevation of Twin Lakes?
818 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8A7 (FAA), in Mocksville, North Carolina.