Godley, Texas · field elev 985 ft
Density Altitude at Aresti Aerodrome (20T)
Aresti Aerodrome sits at 985 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 3,501 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 | 45.2 | 317 ft | 56.8 | 1,090 ft |
| February | 48.9 | 566 ft | 60.8 | 1,351 ft |
| March | 56.0 | 1,037 ft | 68.0 | 1,815 ft |
| April | 63.7 | 1,539 ft | 75.8 | 2,309 ft |
| May | 71.9 | 2,063 ft | 82.8 | 2,745 ft |
| June | 79.7 | 2,553 ft | 90.6 | 3,223 ft |
| July | 83.4 | 2,782 ft | 94.7 | 3,471 ft |
| August | 83.5 | 2,789 ft | 95.2 | 3,501 ft |
| September | 76.6 | 2,360 ft | 88.5 | 3,095 ft |
| October | 66.0 | 1,687 ft | 78.3 | 2,466 ft |
| November | 55.2 | 984 ft | 66.9 | 1,745 ft |
| December | 46.7 | 419 ft | 58.3 | 1,188 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 20T
DENSITY ALTITUDE
Field elevation 985 ft — the air behaves like 3,489 ft.
- PRESSURE ALT
- 986 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 20T in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Aresti Aerodrome reaches roughly 3,501 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 20T on an average day?
It swings with the seasons: from roughly 317 ft at the coldest month's average temperature to about 2,789 ft at the warmest month's — all from a constant field elevation of 985 ft. The month-by-month table above carries the full year.
What is the field elevation of Aresti Aerodrome?
985 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 20T (FAA), in Godley, Texas.