Macon, Mississippi · field elev 238 ft
Density Altitude at Macon Municipal (20M)
Macon Municipal sits at 238 ft, and even a typical August afternoon (91 °F) only lifts density altitude to about 2,308 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 | 43.4 | −733 ft | 54.1 | −12 ft |
| February | 47.1 | −481 ft | 58.7 | 292 ft |
| March | 54.5 | 15 ft | 66.4 | 794 ft |
| April | 62.2 | 522 ft | 74.5 | 1,312 ft |
| May | 70.8 | 1,077 ft | 82.0 | 1,784 ft |
| June | 77.7 | 1,514 ft | 87.8 | 2,143 ft |
| July | 80.3 | 1,677 ft | 90.3 | 2,296 ft |
| August | 80.1 | 1,665 ft | 90.5 | 2,308 ft |
| September | 74.4 | 1,306 ft | 85.7 | 2,013 ft |
| October | 63.5 | 606 ft | 76.3 | 1,426 ft |
| November | 52.6 | −112 ft | 64.9 | 697 ft |
| December | 45.5 | −590 ft | 56.5 | 147 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 20M
DENSITY ALTITUDE
Field elevation 238 ft — the air behaves like 2,339 ft.
- PRESSURE ALT
- 239 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
- KGTR — Golden Triangle Regional
Columbus/W Point/Starkville · elev 264 ft
- KUBS — Columbus-Lowndes County
Columbus · elev 188 ft
- M51 — Oktibbeha
Starkville · elev 250 ft
- KSTF — George M Bryan
Starkville · elev 333 ft
- KLMS — Louisville/Winston County
Louisville · elev 575 ft
- M83 — Mccharen Field
West Point · elev 205 ft
- KMPE — Philadelphia Municipal
Philadelphia · elev 458 ft
- 9M4 — Ackerman Choctaw County
Ackerman · elev 552 ft
Frequently asked questions
How high does density altitude get at 20M in summer?
On a typical August afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Macon Municipal reaches roughly 2,308 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 20M on an average day?
It swings with the seasons: from roughly −733 ft at the coldest month's average temperature to about 1,677 ft at the warmest month's — all from a constant field elevation of 238 ft. The month-by-month table above carries the full year.
What is the field elevation of Macon Municipal?
238 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 20M (FAA), in Macon, Mississippi.