Castroville, Texas · field elev 774 ft
Density Altitude at Castroville Municipal (KCVB)
Castroville Municipal sits at 774 ft, and even a typical August afternoon (96 °F) only lifts density altitude to about 3,305 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 | 54.1 | 651 ft | 66.2 | 1,441 ft |
| February | 57.6 | 882 ft | 69.8 | 1,671 ft |
| March | 64.4 | 1,325 ft | 76.5 | 2,095 ft |
| April | 71.2 | 1,760 ft | 83.0 | 2,500 ft |
| May | 76.8 | 2,114 ft | 87.0 | 2,747 ft |
| June | 83.1 | 2,506 ft | 94.0 | 3,172 ft |
| July | 84.7 | 2,605 ft | 96.0 | 3,293 ft |
| August | 84.6 | 2,599 ft | 96.2 | 3,305 ft |
| September | 80.1 | 2,320 ft | 91.1 | 2,997 ft |
| October | 72.1 | 1,817 ft | 84.0 | 2,562 ft |
| November | 62.7 | 1,214 ft | 74.0 | 1,938 ft |
| December | 55.1 | 717 ft | 66.8 | 1,479 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 KCVB
DENSITY ALTITUDE
Field elevation 774 ft — the air behaves like 3,293 ft.
- PRESSURE ALT
- 775 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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- 53T — Cannon Field
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- 74R — Horizon
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- KSSF — Stinson Municipal
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- KSAT — San Antonio International
San Antonio · elev 809 ft
Frequently asked questions
How high does density altitude get at KCVB in summer?
On a typical August afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Castroville Municipal reaches roughly 3,305 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 KCVB on an average day?
It swings with the seasons: from roughly 651 ft at the coldest month's average temperature to about 2,605 ft at the warmest month's — all from a constant field elevation of 774 ft. The month-by-month table above carries the full year.
What is the field elevation of Castroville Municipal?
774 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCVB (ICAO) / CVB (FAA), in Castroville, Texas.