Lakeway, Texas · field elev 909 ft
Density Altitude at Lakeway Airpark (3R9)
Lakeway Airpark sits at 909 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 3,421 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 | 49.7 | 525 ft | 60.4 | 1,231 ft |
| February | 53.7 | 791 ft | 64.6 | 1,504 ft |
| March | 60.5 | 1,238 ft | 71.8 | 1,964 ft |
| April | 67.6 | 1,696 ft | 78.9 | 2,410 ft |
| May | 74.5 | 2,135 ft | 84.8 | 2,776 ft |
| June | 80.6 | 2,516 ft | 91.0 | 3,155 ft |
| July | 83.2 | 2,677 ft | 94.2 | 3,348 ft |
| August | 83.6 | 2,702 ft | 95.4 | 3,421 ft |
| September | 77.4 | 2,317 ft | 88.8 | 3,021 ft |
| October | 68.6 | 1,760 ft | 79.8 | 2,467 ft |
| November | 58.2 | 1,088 ft | 68.7 | 1,767 ft |
| December | 51.0 | 612 ft | 61.4 | 1,296 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 3R9
DENSITY ALTITUDE
Field elevation 909 ft — the air behaves like 3,397 ft.
- PRESSURE ALT
- 910 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
- KRYW — Lago Vista Tx/Rusty Allen
Lago Vista · elev 1,230 ft
- 88R — Spicewood
Spicewood · elev 830 ft
- KAUS — Austin-Bergstrom International
Austin · elev 542 ft
- KDZB — Horseshoe Bay Resort
Horseshoe Bay · elev 1,093 ft
- KEDC — Austin Exec
Austin · elev 620 ft
- 2G5 — Granite Shoals/ Bob Sylvester Airpark
Granite Shoals · elev 860 ft
- KGTU — Georgetown Exec
Georgetown · elev 790 ft
- 2KL — Sunrise Beach
Sunrise Beach Village · elev 854 ft
Frequently asked questions
How high does density altitude get at 3R9 in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Lakeway Airpark reaches roughly 3,421 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 3R9 on an average day?
It swings with the seasons: from roughly 525 ft at the coldest month's average temperature to about 2,702 ft at the warmest month's — all from a constant field elevation of 909 ft. The month-by-month table above carries the full year.
What is the field elevation of Lakeway Airpark?
909 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3R9 (FAA), in Lakeway, Texas.