Spearman, Texas · field elev 3,090 ft
Density Altitude at Major Samuel B Cornelius Field (E42)
From a field elevation of 3,090 ft, a typical July afternoon at Major Samuel B Cornelius Field (96 °F) raises density altitude to about 6,087 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 | 39.8 | 2,565 ft | 54.4 | 3,528 ft |
| February | 42.8 | 2,765 ft | 58.5 | 3,793 ft |
| March | 51.5 | 3,340 ft | 67.6 | 4,371 ft |
| April | 59.0 | 3,825 ft | 75.2 | 4,844 ft |
| May | 68.1 | 4,402 ft | 83.2 | 5,334 ft ▲ |
| June | 77.5 | 4,986 ft | 92.1 | 5,868 ft ▲ |
| July | 81.7 | 5,242 ft | 95.8 | 6,087 ft ▲ |
| August | 80.3 | 5,157 ft | 94.8 | 6,028 ft ▲ |
| September | 73.2 | 4,720 ft | 87.7 | 5,605 ft ▲ |
| October | 62.0 | 4,017 ft | 77.5 | 4,986 ft |
| November | 49.7 | 3,222 ft | 65.3 | 4,226 ft |
| December | 39.9 | 2,571 ft | 53.4 | 3,463 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 E42
DENSITY ALTITUDE caution
Field elevation 3,090 ft — the air behaves like 6,098 ft.
- PRESSURE ALT
- 3,092 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
- E19 — Gruver Municipal
Gruver · elev 3,205 ft
- KPYX — Perryton Ochiltree County
Perryton · elev 2,918 ft
- KBGD — Hutchinson County
Borger · elev 3,055 ft
- X43 — Sunray
Sunray · elev 3,507 ft
- KPPA — Perry Lefors Field
Pampa · elev 3,245 ft
- 3E0 — Miami-Roberts County
Miami · elev 2,720 ft
- H70 — Stratford Field
Stratford · elev 3,668 ft
- KHHF — Hemphill County
Canadian · elev 2,396 ft
Frequently asked questions
How high does density altitude get at E42 in summer?
On a typical July afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Major Samuel B Cornelius Field reaches roughly 6,087 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 E42 on an average day?
It swings with the seasons: from roughly 2,565 ft at the coldest month's average temperature to about 5,242 ft at the warmest month's — all from a constant field elevation of 3,090 ft. The month-by-month table above carries the full year.
What is the field elevation of Major Samuel B Cornelius Field?
3,090 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is E42 (FAA), in Spearman, Texas.