Mobile, Alabama · field elev 26 ft
Density Altitude at Mobile International (KBFM)
Mobile International sits at 26 ft, and even a typical August afternoon (92 °F) only lifts density altitude to about 2,135 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 | 52.3 | −394 ft | 62.1 | 254 ft |
| February | 55.9 | −155 ft | 65.8 | 494 ft |
| March | 61.8 | 234 ft | 71.8 | 880 ft |
| April | 68.3 | 656 ft | 77.9 | 1,267 ft |
| May | 75.7 | 1,128 ft | 85.0 | 1,711 ft |
| June | 81.5 | 1,493 ft | 90.0 | 2,019 ft |
| July | 83.5 | 1,618 ft | 91.7 | 2,123 ft |
| August | 83.6 | 1,624 ft | 91.9 | 2,135 ft |
| September | 80.3 | 1,418 ft | 88.8 | 1,946 ft |
| October | 71.1 | 836 ft | 81.3 | 1,481 ft |
| November | 60.8 | 169 ft | 71.6 | 868 ft |
| December | 54.6 | −241 ft | 64.3 | 397 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 KBFM
DENSITY ALTITUDE
Field elevation 26 ft — the air behaves like 2,142 ft.
- PRESSURE ALT
- 27 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
- KMOB — Mobile Regional
Mobile · elev 219 ft
- 5R7 — Roy E Ray
Bayou La Batre · elev 87 ft
- 2R5 — St Elmo
St Elmo · elev 132 ft
- KCQF — H L Sonny Callahan
Fairhope · elev 91 ft
- 15A — Mark Reynolds/North Mobile County
Creola · elev 8 ft
- 1R8 — Bay Minette Municipal
Bay Minette · elev 248 ft
- 4R9 — Jeremiah Denton
Dauphin Island · elev 5 ft
- 5R4 — Holk Field At Foley Municipal
Foley · elev 74 ft
Frequently asked questions
How high does density altitude get at KBFM in summer?
On a typical August afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Mobile International reaches roughly 2,135 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 KBFM on an average day?
It swings with the seasons: from roughly −394 ft at the coldest month's average temperature to about 1,624 ft at the warmest month's — all from a constant field elevation of 26 ft. The month-by-month table above carries the full year.
What is the field elevation of Mobile International?
26 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBFM (ICAO) / BFM (FAA), in Mobile, Alabama.