Kosciusko, Mississippi · field elev 494 ft
Density Altitude at Kosciusko-Attala County (KOSX)
Kosciusko-Attala County sits at 494 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,589 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 | 43.7 | −394 ft | 54.3 | 318 ft |
| February | 47.3 | −150 ft | 58.8 | 615 ft |
| March | 54.8 | 351 ft | 66.8 | 1,135 ft |
| April | 62.6 | 863 ft | 74.3 | 1,614 ft |
| May | 70.7 | 1,385 ft | 81.2 | 2,047 ft |
| June | 77.7 | 1,828 ft | 87.5 | 2,436 ft |
| July | 80.5 | 2,003 ft | 90.0 | 2,589 ft |
| August | 80.0 | 1,972 ft | 89.9 | 2,583 ft |
| September | 74.4 | 1,620 ft | 85.3 | 2,301 ft |
| October | 63.2 | 902 ft | 74.5 | 1,626 ft |
| November | 52.5 | 198 ft | 63.8 | 941 ft |
| December | 46.0 | −238 ft | 56.1 | 437 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 KOSX
DENSITY ALTITUDE
Field elevation 494 ft — the air behaves like 2,589 ft.
- PRESSURE ALT
- 495 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 Mississippi fields
- 08M — Carthage-Leake County
Carthage · elev 457 ft
- 9M4 — Ackerman Choctaw County
Ackerman · elev 552 ft
- KLMS — Louisville/Winston County
Louisville · elev 575 ft
- 5A6 — Winona-Montgomery County
Winona · elev 364 ft
- 19M — C A Moore
Lexington · elev 340 ft
- KMPE — Philadelphia Municipal
Philadelphia · elev 458 ft
- 06M — Eupora
Eupora · elev 450 ft
- KGWO — Greenwood-Leflore
Greenwood · elev 162 ft
Frequently asked questions
How high does density altitude get at KOSX in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Kosciusko-Attala County reaches roughly 2,589 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 KOSX on an average day?
It swings with the seasons: from roughly −394 ft at the coldest month's average temperature to about 2,003 ft at the warmest month's — all from a constant field elevation of 494 ft. The month-by-month table above carries the full year.
What is the field elevation of Kosciusko-Attala County?
494 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KOSX (ICAO) / OSX (FAA), in Kosciusko, Mississippi.