Circleville, Ohio · field elev 685 ft
Density Altitude at Pickaway County Meml (KCYO)
Pickaway County Meml sits at 685 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,564 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 | 30.8 | −1,047 ft | 38.6 | −505 ft |
| February | 33.5 | −858 ft | 42.0 | −272 ft |
| March | 42.3 | −252 ft | 52.1 | 408 ft |
| April | 53.8 | 521 ft | 65.5 | 1,286 ft |
| May | 64.0 | 1,189 ft | 74.8 | 1,879 ft |
| June | 72.6 | 1,740 ft | 82.9 | 2,385 ft |
| July | 75.4 | 1,917 ft | 85.8 | 2,564 ft |
| August | 74.2 | 1,841 ft | 85.0 | 2,515 ft |
| September | 68.0 | 1,447 ft | 79.5 | 2,174 ft |
| October | 56.3 | 686 ft | 67.6 | 1,421 ft |
| November | 44.6 | −96 ft | 54.1 | 541 ft |
| December | 35.7 | −706 ft | 43.1 | −197 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 KCYO
DENSITY ALTITUDE
Field elevation 685 ft — the air behaves like 2,577 ft.
- PRESSURE ALT
- 686 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 Ohio fields
- KRZT — Ross County
Chillicothe · elev 725 ft
- KLCK — Rickenbacker International
Columbus · elev 744 ft
- I23 — Fayette County
Washington Court House · elev 980 ft
- KLHQ — Fairfield County
Lancaster · elev 868 ft
- KEOP — Pike County
Waverly · elev 661 ft
- KTZR — Bolton Field
Columbus · elev 904 ft
- 22I — Vinton County
Mc Arthur · elev 954 ft
- 7B4 — Miller Farm Landing Strip
Baltimore · elev 930 ft
Frequently asked questions
How high does density altitude get at KCYO in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Pickaway County Meml reaches roughly 2,564 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 KCYO on an average day?
It swings with the seasons: from roughly −1,047 ft at the coldest month's average temperature to about 1,917 ft at the warmest month's — all from a constant field elevation of 685 ft. The month-by-month table above carries the full year.
What is the field elevation of Pickaway County Meml?
685 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCYO (ICAO) / CYO (FAA), in Circleville, Ohio.