Lancaster, California · field elev 2,351 ft
Density Altitude at General Wm J Fox Airfield (KWJF)
From a field elevation of 2,351 ft, a typical August afternoon at General Wm J Fox Airfield (98 °F) raises density altitude to about 5,311 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 | 45.0 | 1,997 ft | 58.7 | 2,897 ft |
| February | 48.0 | 2,197 ft | 61.5 | 3,077 ft |
| March | 53.5 | 2,559 ft | 67.2 | 3,440 ft |
| April | 58.9 | 2,910 ft | 72.9 | 3,799 ft |
| May | 67.5 | 3,459 ft | 81.6 | 4,337 ft |
| June | 76.4 | 4,017 ft | 91.3 | 4,924 ft |
| July | 82.4 | 4,386 ft | 97.6 | 5,299 ft ▲ |
| August | 81.3 | 4,318 ft | 97.8 | 5,311 ft ▲ |
| September | 74.2 | 3,880 ft | 91.4 | 4,930 ft |
| October | 62.9 | 3,167 ft | 80.0 | 4,239 ft |
| November | 51.0 | 2,395 ft | 67.0 | 3,428 ft |
| December | 43.7 | 1,910 ft | 57.7 | 2,832 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 KWJF
DENSITY ALTITUDE caution
Field elevation 2,351 ft — the air behaves like 5,323 ft.
- PRESSURE ALT
- 2,352 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
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Frequently asked questions
How high does density altitude get at KWJF in summer?
On a typical August afternoon — around 98 °F at the nearest NOAA normals station — density altitude at General Wm J Fox Airfield reaches roughly 5,311 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 KWJF on an average day?
It swings with the seasons: from roughly 1,910 ft at the coldest month's average temperature to about 4,386 ft at the warmest month's — all from a constant field elevation of 2,351 ft. The month-by-month table above carries the full year.
What is the field elevation of General Wm J Fox Airfield?
2,351 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KWJF (ICAO) / WJF (FAA), in Lancaster, California.