Jasper, Texas · field elev 213 ft
Density Altitude at Jasper County/Bell Field (KJAS)
Jasper County/Bell Field sits at 213 ft, and even a typical August afternoon (92 °F) only lifts density altitude to about 2,363 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 | 48.7 | −404 ft | 59.6 | 321 ft |
| February | 52.9 | −123 ft | 64.0 | 608 ft |
| March | 59.5 | 314 ft | 70.6 | 1,033 ft |
| April | 65.5 | 705 ft | 76.5 | 1,408 ft |
| May | 73.3 | 1,206 ft | 83.2 | 1,828 ft |
| June | 79.1 | 1,572 ft | 88.8 | 2,173 ft |
| July | 81.3 | 1,709 ft | 91.2 | 2,320 ft |
| August | 81.5 | 1,722 ft | 91.9 | 2,363 ft |
| September | 77.1 | 1,446 ft | 87.5 | 2,094 ft |
| October | 67.4 | 828 ft | 79.1 | 1,572 ft |
| November | 58.1 | 222 ft | 69.0 | 931 ft |
| December | 50.9 | −256 ft | 61.6 | 452 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 KJAS
DENSITY ALTITUDE
Field elevation 213 ft — the air behaves like 2,369 ft.
- PRESSURE ALT
- 214 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
- 61R — Newton Municipal
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- T12 — Kirbyville
Kirbyville · elev 121 ft
- T24 — Pineland Municipal
Pineland · elev 260 ft
- 09R — Tyler County
Woodville · elev 388 ft
- 45R — Hawthorne Field
Kountze/Silsbee · elev 71 ft
- 78R — San Augustine County
San Augustine · elev 443 ft
- KLFK — Angelina County
Lufkin · elev 296 ft
- KBMT — Beaumont Municipal
Beaumont · elev 32 ft
Frequently asked questions
How high does density altitude get at KJAS in summer?
On a typical August afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Jasper County/Bell Field reaches roughly 2,363 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 KJAS on an average day?
It swings with the seasons: from roughly −404 ft at the coldest month's average temperature to about 1,722 ft at the warmest month's — all from a constant field elevation of 213 ft. The month-by-month table above carries the full year.
What is the field elevation of Jasper County/Bell Field?
213 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJAS (ICAO) / JAS (FAA), in Jasper, Texas.