Marks, Mississippi · field elev 162 ft
Density Altitude at Selfs (KMMS)
Selfs sits at 162 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,313 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 | 41.0 | −992 ft | 50.2 | −367 ft |
| February | 45.4 | −691 ft | 55.3 | −26 ft |
| March | 53.6 | −139 ft | 64.2 | 558 ft |
| April | 62.4 | 441 ft | 73.8 | 1,175 ft |
| May | 71.4 | 1,022 ft | 82.0 | 1,691 ft |
| June | 79.0 | 1,503 ft | 89.5 | 2,154 ft |
| July | 81.7 | 1,672 ft | 92.1 | 2,313 ft |
| August | 81.1 | 1,635 ft | 91.8 | 2,295 ft |
| September | 75.3 | 1,270 ft | 87.0 | 2,001 ft |
| October | 63.3 | 500 ft | 76.1 | 1,320 ft |
| November | 52.3 | −226 ft | 63.6 | 519 ft |
| December | 43.9 | −793 ft | 53.0 | −179 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 KMMS
DENSITY ALTITUDE
Field elevation 162 ft — the air behaves like 2,307 ft.
- PRESSURE ALT
- 163 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
- KCKM — Fletcher Field
Clarksdale · elev 173 ft
- 09M — Charleston Municipal
Charleston · elev 175 ft
- KPMU — Panola County
Batesville · elev 221 ft
- 30M — Ralph M Sharpe
Tunica · elev 195 ft
- KUTA — Tunica Municipal
Tunica · elev 194 ft
- M37 — Ruleville-Drew
Drew · elev 137 ft
- 33M — Water Valley Municipal
Water Valley · elev 270 ft
- KGNF — Grenada Municipal
Grenada · elev 208 ft
Frequently asked questions
How high does density altitude get at KMMS in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Selfs reaches roughly 2,313 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 KMMS on an average day?
It swings with the seasons: from roughly −992 ft at the coldest month's average temperature to about 1,672 ft at the warmest month's — all from a constant field elevation of 162 ft. The month-by-month table above carries the full year.
What is the field elevation of Selfs?
162 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMMS (ICAO) / MMS (FAA), in Marks, Mississippi.