Greenbrier, Arkansas · field elev 329 ft
Density Altitude at Arkavalley (12A)
Arkavalley sits at 329 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,492 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 | 38.7 | −942 ft | 49.1 | −234 ft |
| February | 42.7 | −667 ft | 55.6 | 200 ft |
| March | 50.7 | −126 ft | 63.2 | 699 ft |
| April | 59.4 | 451 ft | 73.0 | 1,329 ft |
| May | 67.8 | 996 ft | 79.6 | 1,745 ft |
| June | 76.3 | 1,538 ft | 87.9 | 2,260 ft |
| July | 80.1 | 1,776 ft | 91.7 | 2,492 ft |
| August | 79.1 | 1,714 ft | 91.6 | 2,486 ft |
| September | 71.9 | 1,259 ft | 85.1 | 2,087 ft |
| October | 60.0 | 490 ft | 74.0 | 1,392 ft |
| November | 49.0 | −240 ft | 61.5 | 588 ft |
| December | 41.4 | −756 ft | 52.2 | −26 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 12A
DENSITY ALTITUDE
Field elevation 329 ft — the air behaves like 2,510 ft.
- PRESSURE ALT
- 330 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 Arkansas fields
- KCXW — Conway Regional
Conway · elev 276 ft
- KBDQ — Morrilton Municipal
Morrilton · elev 321 ft
- KORK — North Little Rock Municipal
North Little Rock · elev 545 ft
- KHBZ — Heber Springs Municipal
Heber Springs · elev 632 ft
- KCCA — Clinton Municipal
Clinton · elev 514 ft
- KLIT — Bill And Hillary Clinton Ntl/Adams Field
Little Rock · elev 266 ft
- KMPJ — Petit Jean Park
Morrilton · elev 923 ft
- 2A2 — Holley Mountain Airpark
Clinton · elev 1,270 ft
Frequently asked questions
How high does density altitude get at 12A in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Arkavalley reaches roughly 2,492 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 12A on an average day?
It swings with the seasons: from roughly −942 ft at the coldest month's average temperature to about 1,776 ft at the warmest month's — all from a constant field elevation of 329 ft. The month-by-month table above carries the full year.
What is the field elevation of Arkavalley?
329 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 12A (FAA), in Greenbrier, Arkansas.