Tehachapi, California · field elev 4,220 ft
Density Altitude at Mountain Valley (L94)
From a field elevation of 4,220 ft, a typical August afternoon at Mountain Valley (86 °F) raises density altitude to about 6,885 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 | 41.8 | 4,097 ft | 51.5 | 4,732 ft |
| February | 42.0 | 4,110 ft | 52.6 | 4,803 ft |
| March | 45.4 | 4,334 ft | 56.5 | 5,053 ft ▲ |
| April | 48.8 | 4,556 ft | 60.8 | 5,326 ft ▲ |
| May | 56.6 | 5,059 ft | 69.3 | 5,858 ft ▲ |
| June | 65.5 | 5,622 ft | 79.0 | 6,453 ft ▲ |
| July | 72.0 | 6,025 ft | 86.1 | 6,880 ft ▲ |
| August | 71.3 | 5,982 ft | 86.2 | 6,885 ft ▲ |
| September | 65.6 | 5,628 ft | 80.7 | 6,556 ft ▲ |
| October | 56.6 | 5,059 ft | 70.5 | 5,932 ft ▲ |
| November | 47.5 | 4,472 ft | 58.5 | 5,180 ft ▲ |
| December | 40.8 | 4,031 ft | 50.6 | 4,673 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 L94
DENSITY ALTITUDE caution
Field elevation 4,220 ft — the air behaves like 6,874 ft.
- PRESSURE ALT
- 4,222 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- 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 California fields
- KTSP — Tehachapi Municipal
Tehachapi · elev 4,001 ft
- KMHV — Mojave Air & Space Port/Rutan Field
Mojave · elev 2,801 ft
- L00 — Rosamond Skypark
Rosamond · elev 2,415 ft
- L71 — California City Municipal
California City · elev 2,454 ft
- KWJF — General Wm J Fox Airfield
Lancaster · elev 2,351 ft
- L45 — Bakersfield Municipal
Bakersfield · elev 378 ft
- KPMD — Palmdale Usaf Plant 42
Palmdale · elev 2,543 ft
- L70 — Agua Dulce
Agua Dulce · elev 2,633 ft
Frequently asked questions
How high does density altitude get at L94 in summer?
On a typical August afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Mountain Valley reaches roughly 6,885 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 L94 on an average day?
It swings with the seasons: from roughly 4,031 ft at the coldest month's average temperature to about 6,025 ft at the warmest month's — all from a constant field elevation of 4,220 ft. The month-by-month table above carries the full year.
What is the field elevation of Mountain Valley?
4,220 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is L94 (FAA), in Tehachapi, California.