Prattville, Alabama · field elev 225 ft
Density Altitude at Prattville/Grouby Field (1A9)
Prattville/Grouby Field sits at 225 ft, and even a typical July afternoon (94 °F) only lifts density altitude to about 2,487 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 | 48.1 | −430 ft | 59.8 | 349 ft |
| February | 52.6 | −128 ft | 64.7 | 668 ft |
| March | 59.2 | 309 ft | 71.9 | 1,131 ft |
| April | 65.7 | 733 ft | 78.8 | 1,568 ft |
| May | 73.6 | 1,239 ft | 86.0 | 2,016 ft |
| June | 80.2 | 1,655 ft | 91.5 | 2,353 ft |
| July | 82.9 | 1,824 ft | 93.7 | 2,487 ft |
| August | 82.5 | 1,799 ft | 93.6 | 2,481 ft |
| September | 77.8 | 1,505 ft | 89.3 | 2,219 ft |
| October | 67.4 | 843 ft | 80.2 | 1,655 ft |
| November | 56.6 | 138 ft | 69.8 | 997 ft |
| December | 50.2 | −289 ft | 61.9 | 486 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 1A9
DENSITY ALTITUDE
Field elevation 225 ft — the air behaves like 2,505 ft.
- PRESSURE ALT
- 226 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 Alabama fields
- KMGM — Montgomery Regional (Dannelly Field)
Montgomery · elev 221 ft
- 08A — Wetumpka Municipal
Wetumpka · elev 197 ft
- KSEM — Craig Field
Selma · elev 166 ft
- 02A — Chilton County
Clanton · elev 585 ft
- KPRN — Mac Crenshaw Meml
Greenville · elev 451 ft
- 07A — Franklin Field
Union Springs · elev 301 ft
- KALX — Thomas C Russell Field
Alexander City · elev 686 ft
- 0A8 — Bibb County
Centreville · elev 251 ft
Frequently asked questions
How high does density altitude get at 1A9 in summer?
On a typical July afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Prattville/Grouby Field reaches roughly 2,487 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 1A9 on an average day?
It swings with the seasons: from roughly −430 ft at the coldest month's average temperature to about 1,824 ft at the warmest month's — all from a constant field elevation of 225 ft. The month-by-month table above carries the full year.
What is the field elevation of Prattville/Grouby Field?
225 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1A9 (FAA), in Prattville, Alabama.