Houston, Texas · field elev 69 ft
Density Altitude at Houston/Southwest (KAXH)
Houston/Southwest sits at 69 ft, and even a typical August afternoon (93 °F) only lifts density altitude to about 2,273 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 | 53.0 | −294 ft | 62.7 | 346 ft |
| February | 57.0 | −29 ft | 66.6 | 599 ft |
| March | 62.6 | 339 ft | 72.4 | 972 ft |
| April | 68.6 | 728 ft | 78.9 | 1,383 ft |
| May | 75.9 | 1,194 ft | 85.4 | 1,788 ft |
| June | 81.2 | 1,527 ft | 90.4 | 2,096 ft |
| July | 83.2 | 1,652 ft | 92.1 | 2,200 ft |
| August | 83.7 | 1,683 ft | 93.3 | 2,273 ft |
| September | 79.6 | 1,427 ft | 89.2 | 2,023 ft |
| October | 71.4 | 908 ft | 82.1 | 1,583 ft |
| November | 62.1 | 307 ft | 72.3 | 965 ft |
| December | 55.3 | −141 ft | 65.1 | 502 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 KAXH
DENSITY ALTITUDE
Field elevation 69 ft — the air behaves like 2,255 ft.
- PRESSURE ALT
- 70 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
- 3T2 — Wolfe Air Park
Manvel · elev 55 ft
- T79 — Skyway Manor
Pearland · elev 55 ft
- 6R5 — Alvin Airpark
Alvin · elev 43 ft
- KSGR — Sugar Land Regional
Houston · elev 81 ft
- KLVJ — Pearland Regional
Houston · elev 44 ft
- KHOU — William P Hobby
Houston · elev 46 ft
- 81D — Flyin Tiger
Angleton · elev 30 ft
- T54 — Lane Airpark
Rosenberg · elev 94 ft
Frequently asked questions
How high does density altitude get at KAXH in summer?
On a typical August afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Houston/Southwest reaches roughly 2,273 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 KAXH on an average day?
It swings with the seasons: from roughly −294 ft at the coldest month's average temperature to about 1,683 ft at the warmest month's — all from a constant field elevation of 69 ft. The month-by-month table above carries the full year.
What is the field elevation of Houston/Southwest?
69 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KAXH (ICAO) / AXH (FAA), in Houston, Texas.