Amarillo, Texas · field elev 3,649 ft
Density Altitude at Tradewind (KTDW)
From a field elevation of 3,649 ft, a typical July afternoon at Tradewind (92 °F) raises density altitude to about 6,538 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 36.2 | 3,016 ft | 50.7 | 3,976 ft |
| February | 39.7 | 3,251 ft | 54.6 | 4,229 ft |
| March | 47.4 | 3,761 ft | 62.6 | 4,740 ft |
| April | 55.1 | 4,261 ft | 70.4 | 5,229 ft ▲ |
| May | 64.5 | 4,860 ft | 79.0 | 5,758 ft ▲ |
| June | 74.3 | 5,470 ft | 88.4 | 6,325 ft ▲ |
| July | 78.4 | 5,722 ft | 92.0 | 6,538 ft ▲ |
| August | 76.9 | 5,630 ft | 90.3 | 6,438 ft ▲ |
| September | 69.8 | 5,192 ft | 83.7 | 6,043 ft ▲ |
| October | 57.6 | 4,422 ft | 72.5 | 5,359 ft ▲ |
| November | 46.0 | 3,669 ft | 60.8 | 4,626 ft |
| December | 36.8 | 3,056 ft | 50.8 | 3,983 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 KTDW
DENSITY ALTITUDE caution
Field elevation 3,649 ft — the air behaves like 6,538 ft.
- PRESSURE ALT
- 3,651 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
- 1E4 — Palo Duro
Amarillo · elev 3,639 ft
- H81 — River Falls
Amarillo · elev 3,585 ft
- KAMA — Rick Husband Amarillo International
Amarillo · elev 3,607 ft
- 1E7 — Buffalo
Amarillo · elev 3,640 ft
- 55T — Eagles Aerodrome
Conway · elev 3,475 ft
- T45 — Panhandle-Carson County
Panhandle · elev 3,454 ft
- E52 — Oldham County
Vega · elev 3,995 ft
- KHRX — Hereford Municipal
Hereford · elev 3,788 ft
Frequently asked questions
How high does density altitude get at KTDW in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Tradewind reaches roughly 6,538 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 KTDW on an average day?
It swings with the seasons: from roughly 3,016 ft at the coldest month's average temperature to about 5,722 ft at the warmest month's — all from a constant field elevation of 3,649 ft. The month-by-month table above carries the full year.
What is the field elevation of Tradewind?
3,649 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTDW (ICAO) / TDW (FAA), in Amarillo, Texas.