Geneva, Alabama · field elev 100 ft
Density Altitude at Geneva Municipal (33J)
Geneva Municipal sits at 100 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,250 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 | 48.3 | −571 ft | 61.8 | 325 ft |
| February | 52.2 | −309 ft | 65.9 | 592 ft |
| March | 58.6 | 115 ft | 73.2 | 1,061 ft |
| April | 64.6 | 508 ft | 79.2 | 1,440 ft |
| May | 72.6 | 1,022 ft | 86.6 | 1,900 ft |
| June | 78.6 | 1,402 ft | 90.7 | 2,152 ft |
| July | 80.7 | 1,534 ft | 92.3 | 2,250 ft |
| August | 80.1 | 1,496 ft | 91.5 | 2,201 ft |
| September | 76.2 | 1,251 ft | 88.4 | 2,011 ft |
| October | 66.5 | 631 ft | 80.8 | 1,540 ft |
| November | 56.3 | −37 ft | 71.0 | 920 ft |
| December | 50.6 | −417 ft | 64.1 | 475 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 33J
DENSITY ALTITUDE
Field elevation 100 ft — the air behaves like 2,232 ft.
- PRESSURE ALT
- 101 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
- 1A4 — Logan Field
Samson · elev 200 ft
- KEDN — Enterprise Municipal
Enterprise · elev 361 ft
- 0J4 — Florala Municipal
Florala · elev 314 ft
- 14J — Carl Folsom
Elba · elev 258 ft
- 71J — Ozark/Blackwell Field
Ozark · elev 358 ft
- KDHN — Dothan Regional
Dothan · elev 401 ft
- 79J — South Alabama Regional At Bill Benton Field
Andalusia · elev 310 ft
- KHDL — Headland Municipal
Headland · elev 359 ft
Frequently asked questions
How high does density altitude get at 33J in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Geneva Municipal reaches roughly 2,250 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 33J on an average day?
It swings with the seasons: from roughly −571 ft at the coldest month's average temperature to about 1,534 ft at the warmest month's — all from a constant field elevation of 100 ft. The month-by-month table above carries the full year.
What is the field elevation of Geneva Municipal?
100 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 33J (FAA), in Geneva, Alabama.