Paris, Texas · field elev 548 ft
Density Altitude at Cox Field (KPRX)
Cox Field sits at 548 ft, and even a typical August afternoon (96 °F) only lifts density altitude to about 3,031 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 | −347 ft | 53.5 | 332 ft |
| February | 47.8 | −49 ft | 58.5 | 662 ft |
| March | 55.7 | 478 ft | 66.5 | 1,182 ft |
| April | 63.9 | 1,014 ft | 75.0 | 1,724 ft |
| May | 72.7 | 1,578 ft | 82.7 | 2,206 ft |
| June | 81.1 | 2,106 ft | 91.2 | 2,728 ft |
| July | 85.3 | 2,367 ft | 95.8 | 3,006 ft |
| August | 85.1 | 2,354 ft | 96.2 | 3,031 ft |
| September | 77.6 | 1,888 ft | 88.7 | 2,575 ft |
| October | 66.4 | 1,176 ft | 78.2 | 1,925 ft |
| November | 54.6 | 405 ft | 65.2 | 1,098 ft |
| December | 45.8 | −184 ft | 55.8 | 484 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 KPRX
DENSITY ALTITUDE
Field elevation 548 ft — the air behaves like 3,018 ft.
- PRESSURE ALT
- 549 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
- KLBR — Clarksville/Red River Cty-J D Trissell Field
Clarksville · elev 440 ft
- F53 — Franklin County
Mount Vernon · elev 412 ft
- KSLR — Sulphur Springs Municipal
Sulphur Springs · elev 489 ft
- 2F7 — Commerce Municipal
Commerce · elev 516 ft
- F00 — Jones Field
Bonham · elev 618 ft
- KOSA — Mount Pleasant Regional
Mount Pleasant · elev 364 ft
- F51 — Winnsboro Municipal
Winnsboro · elev 513 ft
- KGVT — Majors
Greenville · elev 535 ft
Frequently asked questions
How high does density altitude get at KPRX in summer?
On a typical August afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Cox Field reaches roughly 3,031 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 KPRX on an average day?
It swings with the seasons: from roughly −347 ft at the coldest month's average temperature to about 2,367 ft at the warmest month's — all from a constant field elevation of 548 ft. The month-by-month table above carries the full year.
What is the field elevation of Cox Field?
548 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KPRX (ICAO) / PRX (FAA), in Paris, Texas.