Jefferson, Texas · field elev 222 ft
Density Altitude at Cypress River (24F)
Cypress River sits at 222 ft, and even a typical August afternoon (95 °F) only lifts density altitude to about 2,532 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 | −610 ft | 56.9 | 154 ft |
| February | 49.1 | −366 ft | 61.2 | 437 ft |
| March | 56.8 | 147 ft | 69.1 | 948 ft |
| April | 64.1 | 626 ft | 76.6 | 1,426 ft |
| May | 72.3 | 1,153 ft | 83.4 | 1,851 ft |
| June | 79.9 | 1,633 ft | 90.6 | 2,295 ft |
| July | 83.1 | 1,832 ft | 94.0 | 2,502 ft |
| August | 82.7 | 1,808 ft | 94.5 | 2,532 ft |
| September | 76.2 | 1,400 ft | 88.7 | 2,178 ft |
| October | 65.1 | 690 ft | 78.7 | 1,558 ft |
| November | 54.5 | −5 ft | 67.0 | 813 ft |
| December | 47.2 | −494 ft | 58.9 | 286 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 24F
DENSITY ALTITUDE
Field elevation 222 ft — the air behaves like 2,562 ft.
- PRESSURE ALT
- 223 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
- 6F7 — Manning Field
Jefferson · elev 320 ft
- KASL — Harrison County
Marshall · elev 357 ft
- KATA — Hall-Miller Municipal
Atlanta · elev 280 ft
- KGGG — East Texas Regional
Longview · elev 366 ft
- 8F5 — Greater Morris County
Daingerfield · elev 402 ft
- KJXI — Fox Stephens Field/Gilmer Municipal
Gilmer · elev 415 ft
- 4F2 — Panola County-Sharpe Field
Carthage · elev 248 ft
- 07F — Gladewater Municipal
Gladewater · elev 297 ft
Frequently asked questions
How high does density altitude get at 24F in summer?
On a typical August afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Cypress River reaches roughly 2,532 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 24F on an average day?
It swings with the seasons: from roughly −610 ft at the coldest month's average temperature to about 1,832 ft at the warmest month's — all from a constant field elevation of 222 ft. The month-by-month table above carries the full year.
What is the field elevation of Cypress River?
222 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 24F (FAA), in Jefferson, Texas.