Louisville, Kentucky · field elev 501 ft
Density Altitude at Louisville Muhammad Ali International (KSDF)
Louisville Muhammad Ali International sits at 501 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 2,537 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 | 35.7 | −935 ft | 43.6 | −392 ft |
| February | 39.5 | −673 ft | 48.3 | −74 ft |
| March | 48.4 | −67 ft | 58.1 | 578 ft |
| April | 59.0 | 637 ft | 69.6 | 1,323 ft |
| May | 68.3 | 1,240 ft | 77.8 | 1,843 ft |
| June | 76.4 | 1,755 ft | 85.7 | 2,334 ft |
| July | 79.9 | 1,974 ft | 89.0 | 2,537 ft |
| August | 78.9 | 1,912 ft | 88.4 | 2,500 ft |
| September | 72.0 | 1,476 ft | 82.2 | 2,117 ft |
| October | 60.3 | 722 ft | 70.5 | 1,381 ft |
| November | 48.5 | −61 ft | 57.6 | 545 ft |
| December | 39.6 | −666 ft | 47.2 | −148 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 KSDF
DENSITY ALTITUDE
Field elevation 501 ft — the air behaves like 2,537 ft.
- PRESSURE ALT
- 502 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 Kentucky fields
- KLOU — Bowman Field
Louisville · elev 546 ft
- KBRY — Samuels Field
Bardstown · elev 669 ft
- KEKX — Addington Field
Elizabethtown · elev 776 ft
- KFFT — Capital City
Frankfort · elev 813 ft
- 6I2 — Lebanon Springfield/George Hoerter Field
Springfield · elev 871 ft
- I93 — Breckinridge County
Hardinsburg · elev 732 ft
- 8GK — Gallatin County
Sparta · elev 830 ft
- 2I3 — Rough River State Park
Falls-Of-Rough · elev 576 ft
Frequently asked questions
How high does density altitude get at KSDF in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Louisville Muhammad Ali International reaches roughly 2,537 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 KSDF on an average day?
It swings with the seasons: from roughly −935 ft at the coldest month's average temperature to about 1,974 ft at the warmest month's — all from a constant field elevation of 501 ft. The month-by-month table above carries the full year.
What is the field elevation of Louisville Muhammad Ali International?
501 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSDF (ICAO) / SDF (FAA), in Louisville, Kentucky.