Forest, Mississippi · field elev 518 ft
Density Altitude at G V Montgomery (2M4)
G V Montgomery sits at 518 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,661 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 | 45.8 | −222 ft | 57.8 | 579 ft |
| February | 49.6 | 34 ft | 61.9 | 847 ft |
| March | 56.0 | 460 ft | 69.4 | 1,331 ft |
| April | 63.1 | 925 ft | 76.2 | 1,763 ft |
| May | 70.5 | 1,402 ft | 82.7 | 2,169 ft |
| June | 76.9 | 1,807 ft | 89.0 | 2,557 ft |
| July | 79.2 | 1,951 ft | 90.7 | 2,661 ft |
| August | 78.9 | 1,932 ft | 90.6 | 2,655 ft |
| September | 74.3 | 1,643 ft | 86.7 | 2,416 ft |
| October | 64.1 | 990 ft | 77.6 | 1,851 ft |
| November | 53.5 | 295 ft | 67.0 | 1,177 ft |
| December | 47.7 | −93 ft | 59.4 | 684 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 2M4
DENSITY ALTITUDE
Field elevation 518 ft — the air behaves like 2,679 ft.
- PRESSURE ALT
- 519 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
- M23 — James H Easom Field
Newton · elev 370 ft
- 08M — Carthage-Leake County
Carthage · elev 457 ft
- 00M — Thigpen Field
Bay Springs · elev 351 ft
- KJAN — Jackson-Medgar Wiley Evers International
Jackson · elev 346 ft
- KMBO — Bruce Campbell Field
Madison · elev 325 ft
- KMPE — Philadelphia Municipal
Philadelphia · elev 458 ft
- 17M — Magee Municipal
Magee · elev 556 ft
- KHKS — Hawkins Field
Jackson · elev 341 ft
Frequently asked questions
How high does density altitude get at 2M4 in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at G V Montgomery reaches roughly 2,661 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 2M4 on an average day?
It swings with the seasons: from roughly −222 ft at the coldest month's average temperature to about 1,951 ft at the warmest month's — all from a constant field elevation of 518 ft. The month-by-month table above carries the full year.
What is the field elevation of G V Montgomery?
518 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 2M4 (FAA), in Forest, Mississippi.