Charleston, South Carolina · field elev 19 ft
Density Altitude at Charleston Exec (KJZI)
Charleston Exec sits at 19 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 1,857 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 | 50.8 | −504 ft | 58.0 | −24 ft |
| February | 53.2 | −343 ft | 60.3 | 127 ft |
| March | 58.8 | 28 ft | 65.6 | 473 ft |
| April | 66.0 | 499 ft | 72.3 | 904 ft |
| May | 73.5 | 980 ft | 79.0 | 1,328 ft |
| June | 79.2 | 1,341 ft | 84.3 | 1,659 ft |
| July | 82.3 | 1,535 ft | 87.5 | 1,857 ft |
| August | 81.4 | 1,478 ft | 86.4 | 1,789 ft |
| September | 77.6 | 1,240 ft | 82.6 | 1,553 ft |
| October | 69.4 | 718 ft | 75.6 | 1,114 ft |
| November | 60.1 | 114 ft | 67.1 | 570 ft |
| December | 53.8 | −303 ft | 60.9 | 166 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 KJZI
DENSITY ALTITUDE
Field elevation 19 ft — the air behaves like 1,888 ft.
- PRESSURE ALT
- 20 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 South Carolina fields
- KCHS — Charleston AFB/International
Charleston · elev 46 ft
- KLRO — Mt Pleasant Regional-Faison Field
Mount Pleasant · elev 12 ft
- KDYB — Summerville
Summerville · elev 56 ft
- KMKS — Berkeley County
Moncks Corner · elev 74 ft
- KRBW — Lowcountry Regional
Walterboro · elev 101 ft
- KARW — Beaufort Exec
Beaufort · elev 9 ft
- 6J2 — St George
St George · elev 85 ft
- 5J5 — Holly Hill
Holly Hill · elev 96 ft
Frequently asked questions
How high does density altitude get at KJZI in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Charleston Exec reaches roughly 1,857 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 KJZI on an average day?
It swings with the seasons: from roughly −504 ft at the coldest month's average temperature to about 1,535 ft at the warmest month's — all from a constant field elevation of 19 ft. The month-by-month table above carries the full year.
What is the field elevation of Charleston Exec?
19 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJZI (ICAO) / JZI (FAA), in Charleston, South Carolina.