San Saba, Texas · field elev 1,255 ft
Density Altitude at San Saba County Municipal (81R)
San Saba County Municipal sits at 1,255 ft, and even a typical August afternoon (96 °F) only lifts density altitude to about 3,858 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 | 46.1 | 713 ft | 59.4 | 1,593 ft |
| February | 50.3 | 994 ft | 63.6 | 1,865 ft |
| March | 57.2 | 1,449 ft | 70.0 | 2,274 ft |
| April | 64.9 | 1,948 ft | 78.1 | 2,783 ft |
| May | 73.1 | 2,470 ft | 84.7 | 3,192 ft |
| June | 79.9 | 2,895 ft | 91.5 | 3,606 ft |
| July | 83.1 | 3,093 ft | 95.1 | 3,822 ft |
| August | 83.5 | 3,118 ft | 95.7 | 3,858 ft |
| September | 76.4 | 2,677 ft | 88.4 | 3,418 ft |
| October | 66.7 | 2,064 ft | 79.6 | 2,877 ft |
| November | 55.8 | 1,357 ft | 68.6 | 2,185 ft |
| December | 47.6 | 814 ft | 60.7 | 1,677 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 81R
DENSITY ALTITUDE
Field elevation 1,255 ft — the air behaves like 3,876 ft.
- PRESSURE ALT
- 1,256 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
- T37 — Goldthwaite Municipal
Goldthwaite · elev 1,458 ft
- KAQO — Llano Municipal
Llano · elev 1,102 ft
- KLZZ — Lampasas
Lampasas · elev 1,214 ft
- KBBD — Curtis Field
Brady · elev 1,827 ft
- KBWD — Brownwood Regional
Brownwood · elev 1,387 ft
- T92 — Mason County
Mason · elev 1,514 ft
- KBMQ — Burnet Municipal/Kate Craddock Field
Burnet · elev 1,283 ft
- KMNZ — Hamilton Municipal
Hamilton · elev 1,305 ft
Frequently asked questions
How high does density altitude get at 81R in summer?
On a typical August afternoon — around 96 °F at the nearest NOAA normals station — density altitude at San Saba County Municipal reaches roughly 3,858 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 81R on an average day?
It swings with the seasons: from roughly 713 ft at the coldest month's average temperature to about 3,118 ft at the warmest month's — all from a constant field elevation of 1,255 ft. The month-by-month table above carries the full year.
What is the field elevation of San Saba County Municipal?
1,255 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 81R (FAA), in San Saba, Texas.