Halls Crossing, Utah · field elev 4,395 ft
Density Altitude at Cal Black Meml (U96)
From a field elevation of 4,395 ft, a typical July afternoon at Cal Black Meml (100 °F) raises density altitude to about 7,883 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 | 36.1 | 3,934 ft | 46.3 | 4,609 ft |
| February | 41.2 | 4,274 ft | 52.8 | 5,031 ft ▲ |
| March | 49.9 | 4,843 ft | 63.3 | 5,698 ft ▲ |
| April | 57.7 | 5,344 ft | 71.7 | 6,220 ft ▲ |
| May | 67.6 | 5,966 ft | 81.8 | 6,834 ft ▲ |
| June | 79.0 | 6,665 ft | 94.0 | 7,558 ft ▲ |
| July | 85.5 | 7,056 ft | 99.6 | 7,883 ft ▲ |
| August | 82.5 | 6,876 ft | 96.6 | 7,709 ft ▲ |
| September | 73.7 | 6,343 ft | 87.9 | 7,199 ft ▲ |
| October | 59.8 | 5,477 ft | 73.5 | 6,330 ft ▲ |
| November | 46.1 | 4,596 ft | 58.3 | 5,382 ft ▲ |
| December | 35.9 | 3,920 ft | 46.1 | 4,596 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 U96
DENSITY ALTITUDE caution
Field elevation 4,395 ft — the air behaves like 7,906 ft.
- PRESSURE ALT
- 4,397 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 Utah fields
- U07 — Bullfrog Basin
Glen Canyon Natl Rec Area · elev 4,167 ft
- 66V — Bluff
Bluff · elev 4,476 ft
- 1L7 — Escalante Municipal
Escalante · elev 5,737 ft
- KBDG — Blanding Municipal
Blanding · elev 5,868 ft
- KHVE — Hanksville
Hanksville · elev 4,454 ft
- U64 — Monticello
Monticello · elev 6,970 ft
- 38U — Wayne Wonderland
Loa · elev 7,027 ft
- KBCE — Bryce Canyon
Bryce Canyon · elev 7,590 ft
Frequently asked questions
How high does density altitude get at U96 in summer?
On a typical July afternoon — around 100 °F at the nearest NOAA normals station — density altitude at Cal Black Meml reaches roughly 7,883 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 U96 on an average day?
It swings with the seasons: from roughly 3,920 ft at the coldest month's average temperature to about 7,056 ft at the warmest month's — all from a constant field elevation of 4,395 ft. The month-by-month table above carries the full year.
What is the field elevation of Cal Black Meml?
4,395 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U96 (FAA), in Halls Crossing, Utah.