Cynthiana, Kentucky · field elev 721 ft
Density Altitude at Cynthiana-Harrison County (0I8)
Cynthiana-Harrison County sits at 721 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 2,664 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 | 32.0 | −918 ft | 41.2 | −282 ft |
| February | 35.4 | −681 ft | 45.9 | 37 ft |
| March | 43.7 | −112 ft | 55.3 | 665 ft |
| April | 54.3 | 599 ft | 67.2 | 1,440 ft |
| May | 64.1 | 1,240 ft | 75.8 | 1,986 ft |
| June | 72.1 | 1,752 ft | 83.5 | 2,466 ft |
| July | 76.0 | 1,999 ft | 86.7 | 2,664 ft |
| August | 74.6 | 1,911 ft | 86.2 | 2,633 ft |
| September | 67.9 | 1,485 ft | 80.4 | 2,274 ft |
| October | 56.2 | 724 ft | 69.1 | 1,561 ft |
| November | 44.3 | −71 ft | 55.8 | 698 ft |
| December | 36.5 | −605 ft | 45.7 | 24 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 0I8
DENSITY ALTITUDE
Field elevation 721 ft — the air behaves like 2,682 ft.
- PRESSURE ALT
- 722 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
- K62 — Gene Snyder
Falmouth · elev 900 ft
- KIOB — Mount Sterling/Montgomery County
Mount Sterling · elev 1,020 ft
- KLEX — Blue Grass
Lexington · elev 980 ft
- KFGX — Fleming-Mason
Flemingsburg · elev 913 ft
- KFFT — Capital City
Frankfort · elev 813 ft
- KSYM — Morehead-Rowan County Clyde A Thomas Regional
Morehead · elev 1,028 ft
- 8GK — Gallatin County
Sparta · elev 830 ft
Frequently asked questions
How high does density altitude get at 0I8 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Cynthiana-Harrison County reaches roughly 2,664 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 0I8 on an average day?
It swings with the seasons: from roughly −918 ft at the coldest month's average temperature to about 1,999 ft at the warmest month's — all from a constant field elevation of 721 ft. The month-by-month table above carries the full year.
What is the field elevation of Cynthiana-Harrison County?
721 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 0I8 (FAA), in Cynthiana, Kentucky.