Presidio, Texas · field elev 2,938 ft
Density Altitude at Presidio Lely International (KPRS)
From a field elevation of 2,938 ft, a typical June afternoon at Presidio Lely International (103 °F) raises density altitude to about 6,330 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 | 50.9 | 3,113 ft | 67.9 | 4,204 ft |
| February | 57.3 | 3,529 ft | 73.9 | 4,578 ft |
| March | 64.5 | 3,989 ft | 81.2 | 5,027 ft ▲ |
| April | 73.1 | 4,529 ft | 89.9 | 5,552 ft ▲ |
| May | 81.7 | 5,058 ft | 97.5 | 6,003 ft ▲ |
| June | 88.5 | 5,469 ft | 103.1 | 6,330 ft ▲ |
| July | 88.1 | 5,445 ft | 101.0 | 6,208 ft ▲ |
| August | 87.6 | 5,414 ft | 100.2 | 6,161 ft ▲ |
| September | 81.9 | 5,070 ft | 94.7 | 5,838 ft ▲ |
| October | 73.0 | 4,522 ft | 88.1 | 5,445 ft ▲ |
| November | 60.8 | 3,753 ft | 76.9 | 4,764 ft |
| December | 51.2 | 3,132 ft | 67.5 | 4,178 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 KPRS
DENSITY ALTITUDE caution
Field elevation 2,938 ft — the air behaves like 6,324 ft.
- PRESSURE ALT
- 2,940 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
- 3T9 — Big Bend Ranch State Park
Presidio · elev 4,250 ft
- T89 — Lajitas International
Lajitas · elev 2,630 ft
- KMRF — Marfa Municipal
Marfa · elev 4,849 ft
- 1E2 — Terlingua Ranch
Alpine · elev 3,769 ft
- E38 — Alpine-Casparis Municipal
Alpine · elev 4,514 ft
- KVHN — Culberson County
Van Horn · elev 3,957 ft
- KFST — Fort Stockton-Pecos County
Fort Stockton · elev 3,011 ft
- KPEQ — Pecos Municipal
Pecos · elev 2,613 ft
Frequently asked questions
How high does density altitude get at KPRS in summer?
On a typical June afternoon — around 103 °F at the nearest NOAA normals station — density altitude at Presidio Lely International reaches roughly 6,330 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 KPRS on an average day?
It swings with the seasons: from roughly 3,113 ft at the coldest month's average temperature to about 5,469 ft at the warmest month's — all from a constant field elevation of 2,938 ft. The month-by-month table above carries the full year.
What is the field elevation of Presidio Lely International?
2,938 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KPRS (ICAO) / PRS (FAA), in Presidio, Texas.