Lexington, Kentucky · field elev 980 ft
Density Altitude at Blue Grass (KLEX)
Blue Grass sits at 980 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 2,991 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 | 33.9 | −462 ft | 42.3 | 115 ft |
| February | 37.5 | −214 ft | 46.8 | 419 ft |
| March | 45.9 | 358 ft | 56.1 | 1,038 ft |
| April | 56.2 | 1,044 ft | 67.2 | 1,758 ft |
| May | 65.4 | 1,642 ft | 75.8 | 2,303 ft |
| June | 73.3 | 2,146 ft | 83.8 | 2,801 ft |
| July | 76.7 | 2,360 ft | 86.9 | 2,991 ft |
| August | 75.7 | 2,297 ft | 86.2 | 2,949 ft |
| September | 69.1 | 1,879 ft | 80.2 | 2,578 ft |
| October | 57.8 | 1,149 ft | 68.6 | 1,847 ft |
| November | 46.1 | 372 ft | 55.8 | 1,018 ft |
| December | 37.8 | −193 ft | 45.9 | 358 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 KLEX
DENSITY ALTITUDE
Field elevation 980 ft — the air behaves like 2,998 ft.
- PRESSURE ALT
- 981 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
- 27K — Georgetown-Scott County Regional
Georgetown · elev 948 ft
- KFFT — Capital City
Frankfort · elev 813 ft
- 0I8 — Cynthiana-Harrison County
Cynthiana · elev 721 ft
- KRGA — Central Kentucky Regional
Richmond · elev 1,002 ft
- KDVK — Stuart Powell Field
Danville · elev 1,021 ft
- KIOB — Mount Sterling/Montgomery County
Mount Sterling · elev 1,020 ft
- I50 — Stanton
Stanton · elev 651 ft
- 6I2 — Lebanon Springfield/George Hoerter Field
Springfield · elev 871 ft
Frequently asked questions
How high does density altitude get at KLEX in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Blue Grass reaches roughly 2,991 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 KLEX on an average day?
It swings with the seasons: from roughly −462 ft at the coldest month's average temperature to about 2,360 ft at the warmest month's — all from a constant field elevation of 980 ft. The month-by-month table above carries the full year.
What is the field elevation of Blue Grass?
980 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KLEX (ICAO) / LEX (FAA), in Lexington, Kentucky.