Stuart, Florida · field elev 16 ft
Density Altitude at Witham Field (KSUA)
Witham Field sits at 16 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,062 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 | 64.9 | 424 ft | 74.2 | 1,021 ft |
| February | 67.4 | 586 ft | 76.2 | 1,148 ft |
| March | 69.9 | 746 ft | 78.4 | 1,287 ft |
| April | 74.4 | 1,034 ft | 82.3 | 1,531 ft |
| May | 78.2 | 1,274 ft | 85.7 | 1,742 ft |
| June | 81.8 | 1,500 ft | 89.2 | 1,958 ft |
| July | 83.2 | 1,587 ft | 90.9 | 2,062 ft |
| August | 83.2 | 1,587 ft | 90.6 | 2,044 ft |
| September | 82.0 | 1,512 ft | 88.8 | 1,933 ft |
| October | 78.4 | 1,287 ft | 85.1 | 1,705 ft |
| November | 72.4 | 906 ft | 79.7 | 1,368 ft |
| December | 68.1 | 631 ft | 76.1 | 1,142 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 KSUA
DENSITY ALTITUDE
Field elevation 16 ft — the air behaves like 2,068 ft.
- PRESSURE ALT
- 17 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 Florida fields
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- KOBE — Okeechobee County
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- KPHK — Palm Beach County Glades
Pahokee · elev 16 ft
Frequently asked questions
How high does density altitude get at KSUA in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Witham Field reaches roughly 2,062 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 KSUA on an average day?
It swings with the seasons: from roughly 424 ft at the coldest month's average temperature to about 1,587 ft at the warmest month's — all from a constant field elevation of 16 ft. The month-by-month table above carries the full year.
What is the field elevation of Witham Field?
16 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSUA (ICAO) / SUA (FAA), in Stuart, Florida.