St George, South Carolina · field elev 85 ft
Density Altitude at St George (6J2)
St George sits at 85 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,164 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 | 46.4 | −719 ft | 58.2 | 70 ft |
| February | 49.0 | −543 ft | 61.5 | 287 ft |
| March | 55.4 | −115 ft | 68.5 | 741 ft |
| April | 63.2 | 398 ft | 76.3 | 1,239 ft |
| May | 71.1 | 908 ft | 83.1 | 1,665 ft |
| June | 77.9 | 1,340 ft | 88.4 | 1,993 ft |
| July | 80.7 | 1,515 ft | 91.2 | 2,164 ft |
| August | 80.0 | 1,472 ft | 89.9 | 2,085 ft |
| September | 74.7 | 1,137 ft | 84.8 | 1,771 ft |
| October | 64.9 | 509 ft | 76.7 | 1,264 ft |
| November | 54.5 | −175 ft | 67.3 | 664 ft |
| December | 48.7 | −563 ft | 60.4 | 215 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 6J2
DENSITY ALTITUDE
Field elevation 85 ft — the air behaves like 2,152 ft.
- PRESSURE ALT
- 86 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
- 5J5 — Holly Hill
Holly Hill · elev 96 ft
- KDYB — Summerville
Summerville · elev 56 ft
- KRBW — Lowcountry Regional
Walterboro · elev 101 ft
- 1DS — Dry Swamp
Orangeburg · elev 180 ft
- KOGB — Orangeburg Municipal
Orangeburg · elev 195 ft
- KMKS — Berkeley County
Moncks Corner · elev 74 ft
- KMNI — Santee Cooper Regional
Manning · elev 103 ft
- KCHS — Charleston AFB/International
Charleston · elev 46 ft
Frequently asked questions
How high does density altitude get at 6J2 in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at St George reaches roughly 2,164 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 6J2 on an average day?
It swings with the seasons: from roughly −719 ft at the coldest month's average temperature to about 1,515 ft at the warmest month's — all from a constant field elevation of 85 ft. The month-by-month table above carries the full year.
What is the field elevation of St George?
85 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6J2 (FAA), in St George, South Carolina.