Flemingsburg, Kentucky · field elev 913 ft
Density Altitude at Fleming-Mason (KFGX)
Fleming-Mason sits at 913 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,855 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 | 32.1 | −671 ft | 41.2 | −43 ft |
| February | 35.2 | −456 ft | 45.3 | 235 ft |
| March | 42.9 | 72 ft | 54.2 | 829 ft |
| April | 53.9 | 810 ft | 65.8 | 1,586 ft |
| May | 63.9 | 1,463 ft | 75.0 | 2,171 ft |
| June | 72.0 | 1,981 ft | 82.8 | 2,658 ft |
| July | 75.6 | 2,209 ft | 86.0 | 2,855 ft |
| August | 74.1 | 2,114 ft | 84.8 | 2,781 ft |
| September | 68.0 | 1,727 ft | 79.5 | 2,453 ft |
| October | 56.7 | 994 ft | 68.5 | 1,759 ft |
| November | 44.5 | 181 ft | 55.3 | 902 ft |
| December | 36.8 | −345 ft | 45.7 | 262 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 KFGX
DENSITY ALTITUDE
Field elevation 913 ft — the air behaves like 2,855 ft.
- PRESSURE ALT
- 914 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
- KSYM — Morehead-Rowan County Clyde A Thomas Regional
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- 0I8 — Cynthiana-Harrison County
Cynthiana · elev 721 ft
- KIOB — Mount Sterling/Montgomery County
Mount Sterling · elev 1,020 ft
- K62 — Gene Snyder
Falmouth · elev 900 ft
- 27K — Georgetown-Scott County Regional
Georgetown · elev 948 ft
- I50 — Stanton
Stanton · elev 651 ft
- 9I3 — West Liberty
West Liberty · elev 934 ft
- KDWU — Ashland Regional
Ashland · elev 547 ft
Frequently asked questions
How high does density altitude get at KFGX in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Fleming-Mason reaches roughly 2,855 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 KFGX on an average day?
It swings with the seasons: from roughly −671 ft at the coldest month's average temperature to about 2,209 ft at the warmest month's — all from a constant field elevation of 913 ft. The month-by-month table above carries the full year.
What is the field elevation of Fleming-Mason?
913 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFGX (ICAO) / FGX (FAA), in Flemingsburg, Kentucky.