Mc Kinney, Texas · field elev 765 ft
Density Altitude at Aero Country (T31)
Aero Country sits at 765 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 3,198 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 | 45.0 | 31 ft | 56.4 | 792 ft |
| February | 48.1 | 240 ft | 59.9 | 1,021 ft |
| March | 57.1 | 838 ft | 69.0 | 1,609 ft |
| April | 64.2 | 1,301 ft | 76.3 | 2,072 ft |
| May | 72.6 | 1,838 ft | 83.2 | 2,502 ft |
| June | 80.0 | 2,303 ft | 90.4 | 2,943 ft |
| July | 83.3 | 2,508 ft | 94.2 | 3,174 ft |
| August | 82.9 | 2,483 ft | 94.6 | 3,198 ft |
| September | 76.1 | 2,059 ft | 87.3 | 2,754 ft |
| October | 66.2 | 1,429 ft | 78.7 | 2,222 ft |
| November | 55.4 | 726 ft | 66.7 | 1,462 ft |
| December | 47.4 | 193 ft | 58.0 | 897 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 T31
DENSITY ALTITUDE
Field elevation 765 ft — the air behaves like 3,222 ft.
- PRESSURE ALT
- 766 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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Frequently asked questions
How high does density altitude get at T31 in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Aero Country reaches roughly 3,198 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 T31 on an average day?
It swings with the seasons: from roughly 31 ft at the coldest month's average temperature to about 2,508 ft at the warmest month's — all from a constant field elevation of 765 ft. The month-by-month table above carries the full year.
What is the field elevation of Aero Country?
765 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is T31 (FAA), in Mc Kinney, Texas.