Texarkana, Arkansas · field elev 390 ft
Density Altitude at Texarkana Regional-Webb Field (KTXK)
Texarkana Regional-Webb Field sits at 390 ft, and even a typical August afternoon (93 °F) only lifts density altitude to about 2,633 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 | 44.6 | −462 ft | 54.0 | 170 ft |
| February | 48.3 | −212 ft | 58.2 | 447 ft |
| March | 56.0 | 302 ft | 66.7 | 1,001 ft |
| April | 63.6 | 800 ft | 74.5 | 1,499 ft |
| May | 71.6 | 1,315 ft | 81.6 | 1,944 ft |
| June | 78.9 | 1,776 ft | 88.7 | 2,383 ft |
| July | 82.5 | 2,000 ft | 92.7 | 2,627 ft |
| August | 82.0 | 1,969 ft | 92.8 | 2,633 ft |
| September | 75.4 | 1,556 ft | 86.4 | 2,242 ft |
| October | 64.9 | 884 ft | 76.0 | 1,593 ft |
| November | 53.9 | 163 ft | 64.3 | 845 ft |
| December | 46.4 | −340 ft | 55.7 | 282 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 KTXK
DENSITY ALTITUDE
Field elevation 390 ft — the air behaves like 2,645 ft.
- PRESSURE ALT
- 391 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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- 5M8 — Gurdon Lowe Field
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- KADF — Dexter B Florence Meml Field
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Frequently asked questions
How high does density altitude get at KTXK in summer?
On a typical August afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Texarkana Regional-Webb Field reaches roughly 2,633 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 KTXK on an average day?
It swings with the seasons: from roughly −462 ft at the coldest month's average temperature to about 2,000 ft at the warmest month's — all from a constant field elevation of 390 ft. The month-by-month table above carries the full year.
What is the field elevation of Texarkana Regional-Webb Field?
390 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTXK (ICAO) / TXK (FAA), in Texarkana, Arkansas.