Foley, Alabama · field elev 74 ft
Density Altitude at Holk Field At Foley Municipal (5R4)
Holk Field At Foley Municipal sits at 74 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,065 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 | 50.0 | −489 ft | 61.0 | 241 ft |
| February | 53.4 | −261 ft | 64.9 | 495 ft |
| March | 59.6 | 149 ft | 71.1 | 895 ft |
| April | 65.5 | 534 ft | 76.8 | 1,257 ft |
| May | 73.1 | 1,022 ft | 83.9 | 1,701 ft |
| June | 79.0 | 1,395 ft | 88.2 | 1,967 ft |
| July | 81.0 | 1,521 ft | 89.8 | 2,065 ft |
| August | 80.7 | 1,502 ft | 89.5 | 2,047 ft |
| September | 76.9 | 1,263 ft | 86.5 | 1,862 ft |
| October | 67.8 | 683 ft | 79.1 | 1,402 ft |
| November | 58.2 | 57 ft | 69.9 | 818 ft |
| December | 52.2 | −342 ft | 63.1 | 378 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 5R4
DENSITY ALTITUDE
Field elevation 74 ft — the air behaves like 2,078 ft.
- PRESSURE ALT
- 75 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
- KJKA — Gulf Shores International/Jack Edwards Field
Gulf Shores · elev 17 ft
- KCQF — H L Sonny Callahan
Fairhope · elev 91 ft
- KBFM — Mobile International
Mobile · elev 26 ft
- 4R9 — Jeremiah Denton
Dauphin Island · elev 5 ft
- 5R7 — Roy E Ray
Bayou La Batre · elev 87 ft
- 1R8 — Bay Minette Municipal
Bay Minette · elev 248 ft
- 2R5 — St Elmo
St Elmo · elev 132 ft
- KMOB — Mobile Regional
Mobile · elev 219 ft
Frequently asked questions
How high does density altitude get at 5R4 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Holk Field At Foley Municipal reaches roughly 2,065 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 5R4 on an average day?
It swings with the seasons: from roughly −489 ft at the coldest month's average temperature to about 1,521 ft at the warmest month's — all from a constant field elevation of 74 ft. The month-by-month table above carries the full year.
What is the field elevation of Holk Field At Foley Municipal?
74 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 5R4 (FAA), in Foley, Alabama.