Lago Vista, Texas · field elev 1,230 ft
Density Altitude at Lago Vista Tx/Rusty Allen (KRYW)
Lago Vista Tx/Rusty Allen sits at 1,230 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 3,804 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 | 50.3 | 963 ft | 60.3 | 1,620 ft |
| February | 52.9 | 1,135 ft | 63.4 | 1,821 ft |
| March | 60.2 | 1,614 ft | 70.7 | 2,288 ft |
| April | 67.2 | 2,065 ft | 77.8 | 2,734 ft |
| May | 74.0 | 2,496 ft | 83.9 | 3,112 ft |
| June | 80.6 | 2,908 ft | 90.5 | 3,515 ft |
| July | 83.4 | 3,081 ft | 94.2 | 3,738 ft |
| August | 83.9 | 3,112 ft | 95.3 | 3,804 ft |
| September | 77.7 | 2,728 ft | 87.9 | 3,357 ft |
| October | 69.4 | 2,205 ft | 79.0 | 2,809 ft |
| November | 58.6 | 1,510 ft | 68.0 | 2,116 ft |
| December | 50.9 | 1,003 ft | 60.8 | 1,653 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 KRYW
DENSITY ALTITUDE
Field elevation 1,230 ft — the air behaves like 3,786 ft.
- PRESSURE ALT
- 1,231 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
- 88R — Spicewood
Spicewood · elev 830 ft
- 3R9 — Lakeway Airpark
Lakeway · elev 909 ft
- KGTU — Georgetown Exec
Georgetown · elev 790 ft
- KBMQ — Burnet Municipal/Kate Craddock Field
Burnet · elev 1,283 ft
- KDZB — Horseshoe Bay Resort
Horseshoe Bay · elev 1,093 ft
- 2G5 — Granite Shoals/ Bob Sylvester Airpark
Granite Shoals · elev 860 ft
- KEDC — Austin Exec
Austin · elev 620 ft
- 2KL — Sunrise Beach
Sunrise Beach Village · elev 854 ft
Frequently asked questions
How high does density altitude get at KRYW in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Lago Vista Tx/Rusty Allen reaches roughly 3,804 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 KRYW on an average day?
It swings with the seasons: from roughly 963 ft at the coldest month's average temperature to about 3,112 ft at the warmest month's — all from a constant field elevation of 1,230 ft. The month-by-month table above carries the full year.
What is the field elevation of Lago Vista Tx/Rusty Allen?
1,230 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRYW (ICAO) / RYW (FAA), in Lago Vista, Texas.