Jackson, Alabama · field elev 62 ft
Density Altitude at Jackson Municipal (4R3)
Jackson Municipal sits at 62 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,136 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 | 47.9 | −646 ft | 59.9 | 154 ft |
| February | 51.7 | −390 ft | 64.1 | 428 ft |
| March | 58.4 | 55 ft | 71.4 | 899 ft |
| April | 64.4 | 448 ft | 77.5 | 1,286 ft |
| May | 72.1 | 944 ft | 84.5 | 1,724 ft |
| June | 78.6 | 1,356 ft | 89.5 | 2,032 ft |
| July | 80.8 | 1,494 ft | 91.2 | 2,136 ft |
| August | 80.6 | 1,481 ft | 91.2 | 2,136 ft |
| September | 76.2 | 1,204 ft | 87.2 | 1,891 ft |
| October | 66.0 | 552 ft | 78.7 | 1,362 ft |
| November | 55.7 | −123 ft | 68.7 | 726 ft |
| December | 50.1 | −497 ft | 61.9 | 285 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 4R3
DENSITY ALTITUDE
Field elevation 62 ft — the air behaves like 2,124 ft.
- PRESSURE ALT
- 63 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
- 5R1 — Roy Wilcox
Chatom · elev 166 ft
- KMVC — Monroe County Aeroplex
Monroeville · elev 419 ft
- 15A — Mark Reynolds/North Mobile County
Creola · elev 8 ft
- 0R1 — Atmore Municipal
Atmore · elev 286 ft
- 1R8 — Bay Minette Municipal
Bay Minette · elev 248 ft
- 09A — Butler/Choctaw County
Butler · elev 134 ft
- 61A — Camden Municipal
Camden · elev 143 ft
- KGZH — Evergreen Regional/Middleton Field
Evergreen · elev 259 ft
Frequently asked questions
How high does density altitude get at 4R3 in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Jackson Municipal reaches roughly 2,136 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 4R3 on an average day?
It swings with the seasons: from roughly −646 ft at the coldest month's average temperature to about 1,494 ft at the warmest month's — all from a constant field elevation of 62 ft. The month-by-month table above carries the full year.
What is the field elevation of Jackson Municipal?
62 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4R3 (FAA), in Jackson, Alabama.