Somerset, Texas · field elev 610 ft
Density Altitude at Cannon Field (53T)
Cannon Field sits at 610 ft, and even a typical August afternoon (98 °F) only lifts density altitude to about 3,184 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 | 53.5 | 408 ft | 64.7 | 1,142 ft |
| February | 58.0 | 706 ft | 69.2 | 1,431 ft |
| March | 64.4 | 1,123 ft | 75.3 | 1,819 ft |
| April | 71.1 | 1,553 ft | 81.9 | 2,232 ft |
| May | 78.2 | 2,001 ft | 88.1 | 2,614 ft |
| June | 83.8 | 2,350 ft | 93.6 | 2,949 ft |
| July | 85.8 | 2,473 ft | 96.2 | 3,106 ft |
| August | 86.6 | 2,522 ft | 97.5 | 3,184 ft |
| September | 81.3 | 2,195 ft | 91.3 | 2,809 ft |
| October | 72.7 | 1,654 ft | 83.7 | 2,343 ft |
| November | 62.2 | 980 ft | 73.3 | 1,692 ft |
| December | 55.1 | 514 ft | 66.3 | 1,245 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 53T
DENSITY ALTITUDE
Field elevation 610 ft — the air behaves like 3,214 ft.
- PRESSURE ALT
- 611 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
- 74R — Horizon
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- KSSF — Stinson Municipal
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- KSKF — Kelly Field
San Antonio · elev 691 ft
- KPEZ — Pleasanton Municipal
Pleasanton · elev 430 ft
- KCVB — Castroville Municipal
Castroville · elev 774 ft
- KSAT — San Antonio International
San Antonio · elev 809 ft
- 23R — Devine Municipal
Devine · elev 702 ft
- T94 — Twin-Oaks
San Antonio · elev 873 ft
Frequently asked questions
How high does density altitude get at 53T in summer?
On a typical August afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Cannon Field reaches roughly 3,184 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 53T on an average day?
It swings with the seasons: from roughly 408 ft at the coldest month's average temperature to about 2,522 ft at the warmest month's — all from a constant field elevation of 610 ft. The month-by-month table above carries the full year.
What is the field elevation of Cannon Field?
610 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 53T (FAA), in Somerset, Texas.