Welsh, Louisiana · field elev 18 ft
Density Altitude at Welsh (6R1)
Welsh sits at 18 ft, and even a typical August afternoon (91 °F) only lifts density altitude to about 2,071 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 | 50.9 | −498 ft | 60.1 | 113 ft |
| February | 54.5 | −257 ft | 63.9 | 361 ft |
| March | 61.1 | 178 ft | 70.7 | 800 ft |
| April | 67.5 | 594 ft | 77.1 | 1,207 ft |
| May | 74.8 | 1,062 ft | 83.7 | 1,621 ft |
| June | 80.3 | 1,408 ft | 88.5 | 1,917 ft |
| July | 81.9 | 1,508 ft | 90.2 | 2,022 ft |
| August | 82.1 | 1,521 ft | 91.0 | 2,071 ft |
| September | 78.3 | 1,283 ft | 87.7 | 1,868 ft |
| October | 69.5 | 723 ft | 80.4 | 1,415 ft |
| November | 59.7 | 86 ft | 70.2 | 768 ft |
| December | 53.1 | −351 ft | 62.5 | 270 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 6R1
DENSITY ALTITUDE
Field elevation 18 ft — the air behaves like 2,071 ft.
- PRESSURE ALT
- 19 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 Louisiana fields
- 3R7 — Jennings
Jennings · elev 23 ft
- KCWF — Chennault International
Lake Charles · elev 17 ft
- 3R2 — Le Gros Meml
Crowley · elev 14 ft
- KLCH — Lake Charles Regional
Lake Charles · elev 15 ft
- 4R7 — Eunice
Eunice · elev 42 ft
- KUXL — Southland Field
Sulphur · elev 10 ft
- KACP — Allen Parish
Oakdale · elev 107 ft
- 5R8 — De Quincy Industrial Airpark
De Quincy · elev 83 ft
Frequently asked questions
How high does density altitude get at 6R1 in summer?
On a typical August afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Welsh reaches roughly 2,071 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 6R1 on an average day?
It swings with the seasons: from roughly −498 ft at the coldest month's average temperature to about 1,521 ft at the warmest month's — all from a constant field elevation of 18 ft. The month-by-month table above carries the full year.
What is the field elevation of Welsh?
18 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6R1 (FAA), in Welsh, Louisiana.