San Angelo, Texas · field elev 1,919 ft
Density Altitude at San Angelo Regional/Mathis Field (KSJT)
San Angelo Regional/Mathis Field sits at 1,919 ft, and even a typical July afternoon (96 °F) only lifts density altitude to about 4,681 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 45.8 | 1,516 ft | 60.0 | 2,449 ft |
| February | 50.2 | 1,808 ft | 64.4 | 2,732 ft |
| March | 57.5 | 2,287 ft | 71.7 | 3,195 ft |
| April | 65.7 | 2,815 ft | 80.5 | 3,743 ft |
| May | 74.2 | 3,352 ft | 87.5 | 4,171 ft |
| June | 80.9 | 3,767 ft | 93.3 | 4,520 ft |
| July | 83.3 | 3,915 ft | 96.0 | 4,681 ft |
| August | 82.9 | 3,890 ft | 95.4 | 4,645 ft |
| September | 76.0 | 3,464 ft | 88.2 | 4,213 ft |
| October | 66.2 | 2,847 ft | 79.7 | 3,693 ft |
| November | 54.8 | 2,111 ft | 68.3 | 2,980 ft |
| December | 47.2 | 1,609 ft | 60.9 | 2,507 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 KSJT
DENSITY ALTITUDE
Field elevation 1,919 ft — the air behaves like 4,681 ft.
- PRESSURE ALT
- 1,920 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
- 27R — Eldorado
Eldorado · elev 2,448 ft
- E30 — Bruce Field
Ballinger · elev 1,739 ft
- T50 — Menard County
Menard · elev 1,933 ft
- 77F — Winters Municipal
Winters · elev 1,871 ft
- KSOA — Sonora Municipal
Sonora · elev 2,140 ft
- E41 — Reagan County
Big Lake · elev 2,706 ft
- KOZA — Ozona Municipal
Ozona · elev 2,377 ft
- KBBD — Curtis Field
Brady · elev 1,827 ft
Frequently asked questions
How high does density altitude get at KSJT in summer?
On a typical July afternoon — around 96 °F at the nearest NOAA normals station — density altitude at San Angelo Regional/Mathis Field reaches roughly 4,681 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 KSJT on an average day?
It swings with the seasons: from roughly 1,516 ft at the coldest month's average temperature to about 3,915 ft at the warmest month's — all from a constant field elevation of 1,919 ft. The month-by-month table above carries the full year.
What is the field elevation of San Angelo Regional/Mathis Field?
1,919 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSJT (ICAO) / SJT (FAA), in San Angelo, Texas.