Houston, Texas · field elev 46 ft
Density Altitude at William P Hobby (KHOU)
William P Hobby sits at 46 ft, and even a typical August afternoon (94 °F) only lifts density altitude to about 2,257 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 | 55.0 | −190 ft | 63.8 | 389 ft |
| February | 58.8 | 62 ft | 67.6 | 635 ft |
| March | 64.7 | 448 ft | 73.4 | 1,007 ft |
| April | 70.5 | 822 ft | 79.3 | 1,380 ft |
| May | 77.6 | 1,273 ft | 85.9 | 1,791 ft |
| June | 82.9 | 1,605 ft | 91.0 | 2,105 ft |
| July | 84.8 | 1,723 ft | 92.9 | 2,221 ft |
| August | 85.1 | 1,742 ft | 93.5 | 2,257 ft |
| September | 81.1 | 1,493 ft | 89.3 | 2,001 ft |
| October | 73.0 | 982 ft | 82.1 | 1,555 ft |
| November | 63.3 | 357 ft | 72.6 | 956 ft |
| December | 56.9 | −64 ft | 65.7 | 513 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 KHOU
DENSITY ALTITUDE
Field elevation 46 ft — the air behaves like 2,288 ft.
- PRESSURE ALT
- 47 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
- T79 — Skyway Manor
Pearland · elev 55 ft
- KEFD — Ellington
Houston · elev 33 ft
- KLVJ — Pearland Regional
Houston · elev 44 ft
- 3T2 — Wolfe Air Park
Manvel · elev 55 ft
- T41 — La Porte Municipal
La Porte · elev 25 ft
- KAXH — Houston/Southwest
Houston · elev 69 ft
- 6R5 — Alvin Airpark
Alvin · elev 43 ft
- KHPY — Baytown
Baytown · elev 34 ft
Frequently asked questions
How high does density altitude get at KHOU in summer?
On a typical August afternoon — around 94 °F at the nearest NOAA normals station — density altitude at William P Hobby reaches roughly 2,257 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 KHOU on an average day?
It swings with the seasons: from roughly −190 ft at the coldest month's average temperature to about 1,742 ft at the warmest month's — all from a constant field elevation of 46 ft. The month-by-month table above carries the full year.
What is the field elevation of William P Hobby?
46 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHOU (ICAO) / HOU (FAA), in Houston, Texas.