Valley View, Texas · field elev 679 ft
Density Altitude at Tailwheel Acres (X16)
Tailwheel Acres sits at 679 ft, and even a typical August afternoon (97 °F) only lifts density altitude to about 3,208 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 | 43.8 | −157 ft | 54.8 | 580 ft |
| February | 47.8 | 113 ft | 59.3 | 876 ft |
| March | 56.0 | 659 ft | 68.7 | 1,484 ft |
| April | 63.8 | 1,169 ft | 75.3 | 1,903 ft |
| May | 71.7 | 1,675 ft | 83.0 | 2,384 ft |
| June | 80.5 | 2,229 ft | 91.0 | 2,875 ft |
| July | 84.6 | 2,483 ft | 95.1 | 3,123 ft |
| August | 85.1 | 2,514 ft | 96.5 | 3,208 ft |
| September | 77.2 | 2,023 ft | 88.1 | 2,698 ft |
| October | 66.4 | 1,337 ft | 78.1 | 2,079 ft |
| November | 55.0 | 593 ft | 66.7 | 1,356 ft |
| December | 46.0 | −8 ft | 57.3 | 745 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 X16
DENSITY ALTITUDE
Field elevation 679 ft — the air behaves like 3,238 ft.
- PRESSURE ALT
- 680 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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- T58 — Ironhead
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- T87 — Flying C
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- KGLE — Gainesville Municipal
Gainesville · elev 846 ft
- T32 — Sudden Stop
Collinsville · elev 720 ft
- 3TX — Akroville
Slidell · elev 895 ft
Frequently asked questions
How high does density altitude get at X16 in summer?
On a typical August afternoon — around 97 °F at the nearest NOAA normals station — density altitude at Tailwheel Acres reaches roughly 3,208 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 X16 on an average day?
It swings with the seasons: from roughly −157 ft at the coldest month's average temperature to about 2,514 ft at the warmest month's — all from a constant field elevation of 679 ft. The month-by-month table above carries the full year.
What is the field elevation of Tailwheel Acres?
679 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is X16 (FAA), in Valley View, Texas.