Fort Huachuca Sierra Vista, Arizona · field elev 4,719 ft
Density Altitude at Sierra Vista Municipal-Libby Aaf (KFHU)
From a field elevation of 4,719 ft, a typical June afternoon at Sierra Vista Municipal-Libby Aaf (93 °F) raises density altitude to about 7,914 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 | 47.4 | 5,080 ft | 61.1 | 5,956 ft ▲ |
| February | 49.8 | 5,236 ft | 63.6 | 6,113 ft ▲ |
| March | 55.0 | 5,570 ft | 70.0 | 6,510 ft ▲ |
| April | 61.0 | 5,950 ft | 77.0 | 6,938 ft ▲ |
| May | 68.3 | 6,405 ft | 84.2 | 7,371 ft ▲ |
| June | 77.6 | 6,974 ft | 93.4 | 7,914 ft ▲ |
| July | 78.1 | 7,005 ft | 90.7 | 7,756 ft ▲ |
| August | 76.5 | 6,908 ft | 88.7 | 7,638 ft ▲ |
| September | 72.9 | 6,688 ft | 86.3 | 7,496 ft ▲ |
| October | 64.7 | 6,182 ft | 79.4 | 7,083 ft ▲ |
| November | 54.7 | 5,551 ft | 68.4 | 6,412 ft ▲ |
| December | 47.2 | 5,067 ft | 60.1 | 5,893 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 KFHU
DENSITY ALTITUDE caution
Field elevation 4,719 ft — the air behaves like 7,890 ft.
- PRESSURE ALT
- 4,721 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 Arizona fields
- P29 — Tombstone Municipal
Tombstone · elev 4,733 ft
- E95 — Benson Municipal/Paul Kerchum Field
Benson · elev 3,831 ft
- P04 — Bisbee Municipal
Bisbee · elev 4,790 ft
- KOLS — Nogales International
Nogales · elev 3,955 ft
- P03 — Cochise College
Douglas · elev 4,146 ft
- KDUG — Bisbee Douglas International
Douglas Bisbee · elev 4,150 ft
- KTUS — Tucson International
Tucson · elev 2,643 ft
- KDGL — Douglas Municipal
Douglas · elev 4,173 ft
Frequently asked questions
How high does density altitude get at KFHU in summer?
On a typical June afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Sierra Vista Municipal-Libby Aaf reaches roughly 7,914 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 KFHU on an average day?
It swings with the seasons: from roughly 5,067 ft at the coldest month's average temperature to about 7,005 ft at the warmest month's — all from a constant field elevation of 4,719 ft. The month-by-month table above carries the full year.
What is the field elevation of Sierra Vista Municipal-Libby Aaf?
4,719 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFHU (ICAO) / FHU (FAA), in Fort Huachuca Sierra Vista, Arizona.