Quitman, Mississippi · field elev 321 ft
Density Altitude at Clarke County (23M)
Clarke County sits at 321 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,452 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 | 46.9 | −392 ft | 57.8 | 336 ft |
| February | 50.9 | −123 ft | 63.1 | 682 ft |
| March | 57.8 | 336 ft | 70.8 | 1,179 ft |
| April | 64.0 | 741 ft | 77.1 | 1,578 ft |
| May | 71.5 | 1,223 ft | 84.0 | 2,009 ft |
| June | 78.4 | 1,660 ft | 89.6 | 2,354 ft |
| July | 80.1 | 1,766 ft | 91.2 | 2,452 ft |
| August | 79.8 | 1,748 ft | 90.7 | 2,421 ft |
| September | 75.6 | 1,484 ft | 87.6 | 2,231 ft |
| October | 63.9 | 734 ft | 76.7 | 1,553 ft |
| November | 54.3 | 104 ft | 66.9 | 929 ft |
| December | 48.9 | −257 ft | 59.7 | 460 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 23M
DENSITY ALTITUDE
Field elevation 321 ft — the air behaves like 2,440 ft.
- PRESSURE ALT
- 322 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
- KMEI — Key Field
Meridian · elev 298 ft
- M23 — James H Easom Field
Newton · elev 370 ft
- 00M — Thigpen Field
Bay Springs · elev 351 ft
- 2R0 — Waynesboro Municipal
Waynesboro · elev 169 ft
- KLUL — Hesler/Noble Field
Laurel · elev 238 ft
- 2M4 — G V Montgomery
Forest · elev 518 ft
- KMPE — Philadelphia Municipal
Philadelphia · elev 458 ft
- M59 — Richton-Perry County
Richton · elev 167 ft
Frequently asked questions
How high does density altitude get at 23M in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Clarke County reaches roughly 2,452 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 23M on an average day?
It swings with the seasons: from roughly −392 ft at the coldest month's average temperature to about 1,766 ft at the warmest month's — all from a constant field elevation of 321 ft. The month-by-month table above carries the full year.
What is the field elevation of Clarke County?
321 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 23M (FAA), in Quitman, Mississippi.