Palmer, Texas · field elev 474 ft
Density Altitude at Dallas South Port (T13)
Dallas South Port sits at 474 ft, and even a typical August afternoon (97 °F) only lifts density altitude to about 2,959 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 | 46.5 | −229 ft | 57.5 | 505 ft |
| February | 50.3 | 27 ft | 61.7 | 780 ft |
| March | 57.2 | 485 ft | 69.0 | 1,252 ft |
| April | 65.0 | 994 ft | 76.6 | 1,734 ft |
| May | 73.5 | 1,538 ft | 83.8 | 2,184 ft |
| June | 81.1 | 2,016 ft | 91.5 | 2,656 ft |
| July | 84.7 | 2,239 ft | 95.9 | 2,923 ft |
| August | 84.9 | 2,252 ft | 96.5 | 2,959 ft |
| September | 78.1 | 1,828 ft | 90.0 | 2,565 ft |
| October | 67.2 | 1,136 ft | 79.5 | 1,916 ft |
| November | 55.9 | 399 ft | 67.2 | 1,136 ft |
| December | 47.8 | −141 ft | 58.7 | 584 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 T13
DENSITY ALTITUDE
Field elevation 474 ft — the air behaves like 2,989 ft.
- PRESSURE ALT
- 475 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 Texas fields
- KLNC — Lancaster Regional
Lancaster · elev 501 ft
- F41 — Ennis Municipal
Ennis · elev 500 ft
- KJWY — Mid-Way Regional
Midlothian/Waxahachie · elev 727 ft
- T56 — Eagle'S Nest Estates
Midlothian · elev 780 ft
- KRBD — Dallas Exec
Dallas · elev 661 ft
- KHQZ — Mesquite Metro
Mesquite · elev 447 ft
- KGPM — Grand Prairie Municipal
Grand Prairie · elev 590 ft
- KGKY — Arlington Municipal
Arlington · elev 628 ft
Frequently asked questions
How high does density altitude get at T13 in summer?
On a typical August afternoon — around 97 °F at the nearest NOAA normals station — density altitude at Dallas South Port reaches roughly 2,959 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 T13 on an average day?
It swings with the seasons: from roughly −229 ft at the coldest month's average temperature to about 2,252 ft at the warmest month's — all from a constant field elevation of 474 ft. The month-by-month table above carries the full year.
What is the field elevation of Dallas South Port?
474 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is T13 (FAA), in Palmer, Texas.