Punta Gorda, Florida · field elev 20 ft
Density Altitude at Shell Creek Airpark (F13)
Shell Creek Airpark sits at 20 ft, and even a typical July afternoon (93 °F) only lifts density altitude to about 2,165 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 | 62.9 | 298 ft | 75.3 | 1,096 ft |
| February | 65.5 | 468 ft | 78.1 | 1,273 ft |
| March | 68.5 | 661 ft | 81.3 | 1,473 ft |
| April | 73.1 | 956 ft | 85.8 | 1,753 ft |
| May | 77.9 | 1,260 ft | 90.1 | 2,018 ft |
| June | 81.7 | 1,498 ft | 91.7 | 2,116 ft |
| July | 83.3 | 1,598 ft | 92.5 | 2,165 ft |
| August | 83.5 | 1,611 ft | 92.5 | 2,165 ft |
| September | 82.1 | 1,523 ft | 90.7 | 2,055 ft |
| October | 77.2 | 1,216 ft | 87.4 | 1,852 ft |
| November | 70.2 | 771 ft | 81.7 | 1,498 ft |
| December | 65.8 | 487 ft | 77.6 | 1,241 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 F13
DENSITY ALTITUDE
Field elevation 20 ft — the air behaves like 2,195 ft.
- PRESSURE ALT
- 21 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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- KRSW — Southwest Florida International
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- KVNC — Venice Municipal
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- X14 — La Belle Municipal
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- KCHN — Wauchula Municipal
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Frequently asked questions
How high does density altitude get at F13 in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Shell Creek Airpark reaches roughly 2,165 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 F13 on an average day?
It swings with the seasons: from roughly 298 ft at the coldest month's average temperature to about 1,611 ft at the warmest month's — all from a constant field elevation of 20 ft. The month-by-month table above carries the full year.
What is the field elevation of Shell Creek Airpark?
20 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is F13 (FAA), in Punta Gorda, Florida.