Liberty, Texas · field elev 70 ft
Density Altitude at Liberty Municipal (T78)
Liberty Municipal sits at 70 ft, and even a typical August afternoon (94 °F) only lifts density altitude to about 2,329 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 | 52.6 | −320 ft | 64.0 | 432 ft |
| February | 56.1 | −87 ft | 67.1 | 633 ft |
| March | 62.5 | 334 ft | 73.5 | 1,043 ft |
| April | 68.4 | 716 ft | 79.3 | 1,409 ft |
| May | 75.6 | 1,176 ft | 85.8 | 1,814 ft |
| June | 81.4 | 1,541 ft | 91.1 | 2,140 ft |
| July | 83.5 | 1,672 ft | 93.4 | 2,280 ft |
| August | 83.8 | 1,690 ft | 94.2 | 2,329 ft |
| September | 79.5 | 1,422 ft | 90.0 | 2,073 ft |
| October | 70.8 | 871 ft | 82.8 | 1,628 ft |
| November | 60.8 | 223 ft | 72.4 | 973 ft |
| December | 53.9 | −233 ft | 65.3 | 516 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 T78
DENSITY ALTITUDE
Field elevation 70 ft — the air behaves like 2,317 ft.
- PRESSURE ALT
- 71 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
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- 6R3 — Cleveland Municipal
Cleveland · elev 150 ft
- KBMT — Beaumont Municipal
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- T41 — La Porte Municipal
La Porte · elev 25 ft
Frequently asked questions
How high does density altitude get at T78 in summer?
On a typical August afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Liberty Municipal reaches roughly 2,329 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 T78 on an average day?
It swings with the seasons: from roughly −320 ft at the coldest month's average temperature to about 1,690 ft at the warmest month's — all from a constant field elevation of 70 ft. The month-by-month table above carries the full year.
What is the field elevation of Liberty Municipal?
70 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is T78 (FAA), in Liberty, Texas.