Dryden, Texas · field elev 2,323 ft
Density Altitude at Terrell County (6R6)
From a field elevation of 2,323 ft, a typical July afternoon at Terrell County (97 °F) raises density altitude to about 5,200 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 | 49.4 | 2,255 ft | 62.0 | 3,075 ft |
| February | 54.4 | 2,583 ft | 67.9 | 3,450 ft |
| March | 61.9 | 3,068 ft | 76.0 | 3,958 ft |
| April | 69.6 | 3,558 ft | 83.5 | 4,419 ft |
| May | 77.5 | 4,050 ft | 90.8 | 4,860 ft |
| June | 82.7 | 4,370 ft | 95.0 | 5,111 ft ▲ |
| July | 84.5 | 4,480 ft | 96.5 | 5,200 ft ▲ |
| August | 83.9 | 4,443 ft | 96.0 | 5,170 ft ▲ |
| September | 77.9 | 4,075 ft | 89.3 | 4,770 ft |
| October | 69.0 | 3,520 ft | 81.2 | 4,278 ft |
| November | 58.0 | 2,817 ft | 70.5 | 3,614 ft |
| December | 50.0 | 2,294 ft | 62.4 | 3,100 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 6R6
DENSITY ALTITUDE caution
Field elevation 2,323 ft — the air behaves like 5,230 ft.
- PRESSURE ALT
- 2,324 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- 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
- 2F0 — Iraan Municipal
Iraan · elev 2,200 ft
- KFST — Fort Stockton-Pecos County
Fort Stockton · elev 3,011 ft
- E48 — Upton County
Mc Camey · elev 2,433 ft
- KOZA — Ozona Municipal
Ozona · elev 2,377 ft
- 1E2 — Terlingua Ranch
Alpine · elev 3,769 ft
- 49F — Rankin
Rankin · elev 2,543 ft
- KDRT — Del Rio International
Del Rio · elev 1,002 ft
- E38 — Alpine-Casparis Municipal
Alpine · elev 4,514 ft
Frequently asked questions
How high does density altitude get at 6R6 in summer?
On a typical July afternoon — around 97 °F at the nearest NOAA normals station — density altitude at Terrell County reaches roughly 5,200 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 6R6 on an average day?
It swings with the seasons: from roughly 2,255 ft at the coldest month's average temperature to about 4,480 ft at the warmest month's — all from a constant field elevation of 2,323 ft. The month-by-month table above carries the full year.
What is the field elevation of Terrell County?
2,323 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6R6 (FAA), in Dryden, Texas.