Brewton, Alabama · field elev 99 ft
Density Altitude at Brewton Municipal (12J)
Brewton Municipal sits at 99 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,255 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 | −398 ft | 62.7 | 383 ft |
| February | 54.0 | −191 ft | 66.4 | 623 ft |
| March | 60.5 | 239 ft | 73.8 | 1,097 ft |
| April | 66.3 | 617 ft | 79.5 | 1,457 ft |
| May | 74.2 | 1,123 ft | 86.2 | 1,874 ft |
| June | 80.3 | 1,507 ft | 91.0 | 2,169 ft |
| July | 82.4 | 1,639 ft | 92.4 | 2,255 ft |
| August | 82.1 | 1,620 ft | 92.1 | 2,236 ft |
| September | 77.9 | 1,357 ft | 88.9 | 2,041 ft |
| October | 68.1 | 733 ft | 80.8 | 1,539 ft |
| November | 57.8 | 61 ft | 71.2 | 932 ft |
| December | 52.7 | −277 ft | 64.4 | 493 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 12J
DENSITY ALTITUDE
Field elevation 99 ft — the air behaves like 2,230 ft.
- PRESSURE ALT
- 100 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
- 0R1 — Atmore Municipal
Atmore · elev 286 ft
- KGZH — Evergreen Regional/Middleton Field
Evergreen · elev 259 ft
- KMVC — Monroe County Aeroplex
Monroeville · elev 419 ft
- 79J — South Alabama Regional At Bill Benton Field
Andalusia · elev 310 ft
- 0J4 — Florala Municipal
Florala · elev 314 ft
- 1R8 — Bay Minette Municipal
Bay Minette · elev 248 ft
- 15A — Mark Reynolds/North Mobile County
Creola · elev 8 ft
- 4R3 — Jackson Municipal
Jackson · elev 62 ft
Frequently asked questions
How high does density altitude get at 12J in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Brewton Municipal reaches roughly 2,255 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 12J on an average day?
It swings with the seasons: from roughly −398 ft at the coldest month's average temperature to about 1,639 ft at the warmest month's — all from a constant field elevation of 99 ft. The month-by-month table above carries the full year.
What is the field elevation of Brewton Municipal?
99 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 12J (FAA), in Brewton, Alabama.