Jefferson, Texas · field elev 320 ft
Density Altitude at Manning Field (6F7)
Manning Field sits at 320 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 2,651 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 | 45.5 | −488 ft | 56.9 | 275 ft |
| February | 49.1 | −245 ft | 61.2 | 557 ft |
| March | 56.8 | 268 ft | 69.1 | 1,069 ft |
| April | 64.1 | 746 ft | 76.6 | 1,546 ft |
| May | 72.3 | 1,273 ft | 83.4 | 1,971 ft |
| June | 79.9 | 1,753 ft | 90.6 | 2,414 ft |
| July | 83.1 | 1,952 ft | 94.0 | 2,621 ft |
| August | 82.7 | 1,927 ft | 94.5 | 2,651 ft |
| September | 76.2 | 1,520 ft | 88.7 | 2,298 ft |
| October | 65.1 | 811 ft | 78.7 | 1,678 ft |
| November | 54.5 | 116 ft | 67.0 | 934 ft |
| December | 47.2 | −373 ft | 58.9 | 407 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 6F7
DENSITY ALTITUDE
Field elevation 320 ft — the air behaves like 2,681 ft.
- PRESSURE ALT
- 321 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 Texas fields
- 24F — Cypress River
Jefferson · elev 222 ft
- KATA — Hall-Miller Municipal
Atlanta · elev 280 ft
- KASL — Harrison County
Marshall · elev 357 ft
- 8F5 — Greater Morris County
Daingerfield · elev 402 ft
- KJXI — Fox Stephens Field/Gilmer Municipal
Gilmer · elev 415 ft
- KGGG — East Texas Regional
Longview · elev 366 ft
- KOSA — Mount Pleasant Regional
Mount Pleasant · elev 364 ft
- 07F — Gladewater Municipal
Gladewater · elev 297 ft
Frequently asked questions
How high does density altitude get at 6F7 in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Manning Field reaches roughly 2,651 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 6F7 on an average day?
It swings with the seasons: from roughly −488 ft at the coldest month's average temperature to about 1,952 ft at the warmest month's — all from a constant field elevation of 320 ft. The month-by-month table above carries the full year.
What is the field elevation of Manning Field?
320 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6F7 (FAA), in Jefferson, Texas.