Marion, South Carolina · field elev 93 ft
Density Altitude at Marion County (KMAO)
Marion County sits at 93 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,131 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 | 45.0 | −804 ft | 56.1 | −58 ft |
| February | 48.1 | −594 ft | 59.8 | 186 ft |
| March | 54.6 | −158 ft | 66.9 | 648 ft |
| April | 62.3 | 349 ft | 75.4 | 1,192 ft |
| May | 70.5 | 880 ft | 82.1 | 1,613 ft |
| June | 77.5 | 1,324 ft | 87.6 | 1,953 ft |
| July | 80.8 | 1,531 ft | 90.5 | 2,131 ft |
| August | 79.3 | 1,437 ft | 88.9 | 2,033 ft |
| September | 74.0 | 1,103 ft | 84.2 | 1,743 ft |
| October | 63.7 | 441 ft | 75.8 | 1,217 ft |
| November | 54.2 | −185 ft | 66.1 | 596 ft |
| December | 48.0 | −600 ft | 59.4 | 159 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 KMAO
DENSITY ALTITUDE
Field elevation 93 ft — the air behaves like 2,162 ft.
- PRESSURE ALT
- 94 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
- KDLC — Dillon County
Dillon · elev 133 ft
- KFLO — Florence Regional
Florence · elev 147 ft
- KHYW — Conway-Horry County
Conway · elev 35 ft
- 5J9 — Twin City
Loris · elev 99 ft
- 9W9 — Clio Crop Care
Clio · elev 192 ft
- 51J — Lake City Municipal Cj Evans Field
Lake City · elev 80 ft
- 58J — Huggins Meml
Timmonsville · elev 143 ft
- 6J7 — Branhams
Darlington · elev 166 ft
Frequently asked questions
How high does density altitude get at KMAO in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Marion County reaches roughly 2,131 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 KMAO on an average day?
It swings with the seasons: from roughly −804 ft at the coldest month's average temperature to about 1,531 ft at the warmest month's — all from a constant field elevation of 93 ft. The month-by-month table above carries the full year.
What is the field elevation of Marion County?
93 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMAO (ICAO) / MAO (FAA), in Marion, South Carolina.