Hebbronville, Texas · field elev 663 ft
Density Altitude at Jim Hogg County (KHBV)
Jim Hogg County sits at 663 ft, and even a typical August afternoon (100 °F) only lifts density altitude to about 3,392 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 | 57.8 | 758 ft | 69.6 | 1,522 ft |
| February | 62.1 | 1,039 ft | 74.0 | 1,802 ft |
| March | 68.4 | 1,445 ft | 79.9 | 2,172 ft |
| April | 74.8 | 1,852 ft | 86.8 | 2,599 ft |
| May | 81.2 | 2,253 ft | 92.4 | 2,941 ft |
| June | 85.8 | 2,538 ft | 97.2 | 3,230 ft |
| July | 86.8 | 2,599 ft | 98.4 | 3,302 ft |
| August | 87.5 | 2,642 ft | 99.9 | 3,392 ft |
| September | 82.1 | 2,309 ft | 93.2 | 2,989 ft |
| October | 75.6 | 1,903 ft | 87.8 | 2,660 ft |
| November | 66.4 | 1,317 ft | 78.1 | 2,060 ft |
| December | 58.9 | 830 ft | 70.4 | 1,573 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 KHBV
DENSITY ALTITUDE
Field elevation 663 ft — the air behaves like 3,398 ft.
- PRESSURE ALT
- 664 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
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- KLRD — Laredo International
Laredo · elev 508 ft
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Alice · elev 178 ft
- 67T — Old Hoppe Place
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- 07R — Bishop-Windham
Bishop · elev 55 ft
Frequently asked questions
How high does density altitude get at KHBV in summer?
On a typical August afternoon — around 100 °F at the nearest NOAA normals station — density altitude at Jim Hogg County reaches roughly 3,392 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 KHBV on an average day?
It swings with the seasons: from roughly 758 ft at the coldest month's average temperature to about 2,642 ft at the warmest month's — all from a constant field elevation of 663 ft. The month-by-month table above carries the full year.
What is the field elevation of Jim Hogg County?
663 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHBV (ICAO) / HBV (FAA), in Hebbronville, Texas.