Alpine, Texas · field elev 4,514 ft
Density Altitude at Alpine-Casparis Municipal (E38)
From a field elevation of 4,514 ft, a typical June afternoon at Alpine-Casparis Municipal (92 °F) raises density altitude to about 7,602 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 | 46.2 | 4,749 ft | 61.1 | 5,705 ft ▲ |
| February | 49.8 | 4,983 ft | 65.7 | 5,994 ft ▲ |
| March | 56.0 | 5,382 ft | 71.7 | 6,365 ft ▲ |
| April | 63.5 | 5,856 ft | 80.0 | 6,870 ft ▲ |
| May | 71.3 | 6,340 ft | 87.0 | 7,289 ft ▲ |
| June | 77.8 | 6,737 ft | 92.3 | 7,602 ft ▲ |
| July | 77.6 | 6,725 ft | 90.8 | 7,514 ft ▲ |
| August | 76.3 | 6,646 ft | 89.5 | 7,437 ft ▲ |
| September | 71.0 | 6,322 ft | 84.2 | 7,122 ft ▲ |
| October | 63.7 | 5,869 ft | 78.8 | 6,798 ft ▲ |
| November | 53.7 | 5,235 ft | 68.8 | 6,186 ft ▲ |
| December | 46.7 | 4,782 ft | 61.2 | 5,712 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 E38
DENSITY ALTITUDE caution
Field elevation 4,514 ft — the air behaves like 7,584 ft.
- PRESSURE ALT
- 4,516 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
- KMRF — Marfa Municipal
Marfa · elev 4,849 ft
- KFST — Fort Stockton-Pecos County
Fort Stockton · elev 3,011 ft
- 3T9 — Big Bend Ranch State Park
Presidio · elev 4,250 ft
- KPRS — Presidio Lely International
Presidio · elev 2,938 ft
- 1E2 — Terlingua Ranch
Alpine · elev 3,769 ft
- KPEQ — Pecos Municipal
Pecos · elev 2,613 ft
- T89 — Lajitas International
Lajitas · elev 2,630 ft
- KVHN — Culberson County
Van Horn · elev 3,957 ft
Frequently asked questions
How high does density altitude get at E38 in summer?
On a typical June afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Alpine-Casparis Municipal reaches roughly 7,602 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 E38 on an average day?
It swings with the seasons: from roughly 4,749 ft at the coldest month's average temperature to about 6,737 ft at the warmest month's — all from a constant field elevation of 4,514 ft. The month-by-month table above carries the full year.
What is the field elevation of Alpine-Casparis Municipal?
4,514 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is E38 (FAA), in Alpine, Texas.