Pearsall, Texas · field elev 586 ft
Density Altitude at Mc Kinley Field (T30)
Mc Kinley Field sits at 586 ft, and even a typical August afternoon (98 °F) only lifts density altitude to about 3,173 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 | 53.7 | 392 ft | 65.7 | 1,177 ft |
| February | 58.0 | 676 ft | 70.4 | 1,479 ft |
| March | 64.8 | 1,119 ft | 76.9 | 1,890 ft |
| April | 71.7 | 1,561 ft | 84.4 | 2,357 ft |
| May | 78.7 | 2,003 ft | 90.2 | 2,713 ft |
| June | 83.8 | 2,320 ft | 95.5 | 3,035 ft |
| July | 85.4 | 2,419 ft | 97.0 | 3,125 ft |
| August | 85.9 | 2,450 ft | 97.8 | 3,173 ft |
| September | 80.6 | 2,122 ft | 91.7 | 2,805 ft |
| October | 72.6 | 1,619 ft | 84.5 | 2,364 ft |
| November | 62.1 | 944 ft | 73.3 | 1,663 ft |
| December | 54.6 | 452 ft | 66.3 | 1,216 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 T30
DENSITY ALTITUDE
Field elevation 586 ft — the air behaves like 3,185 ft.
- PRESSURE ALT
- 587 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
- 24R — Dilley Airpark
Dilley · elev 542 ft
- 23R — Devine Municipal
Devine · elev 702 ft
- KCOT — Cotulla-La Salle County
Cotulla · elev 474 ft
- KPEZ — Pleasanton Municipal
Pleasanton · elev 430 ft
- KHDO — South Texas Regional At Hondo
Hondo · elev 930 ft
- KCVB — Castroville Municipal
Castroville · elev 774 ft
- 53T — Cannon Field
Somerset · elev 610 ft
- KUVA — Garner Field
Uvalde · elev 942 ft
Frequently asked questions
How high does density altitude get at T30 in summer?
On a typical August afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Mc Kinley Field reaches roughly 3,173 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 T30 on an average day?
It swings with the seasons: from roughly 392 ft at the coldest month's average temperature to about 2,450 ft at the warmest month's — all from a constant field elevation of 586 ft. The month-by-month table above carries the full year.
What is the field elevation of Mc Kinley Field?
586 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is T30 (FAA), in Pearsall, Texas.