Chillicothe, Ohio · field elev 725 ft
Density Altitude at Ross County (KRZT)
Ross County sits at 725 ft, and even a typical July afternoon (85 °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 | 30.1 | −1,046 ft | 39.3 | −407 ft |
| February | 33.4 | −815 ft | 43.0 | −155 ft |
| March | 42.2 | −209 ft | 53.4 | 544 ft |
| April | 53.4 | 544 ft | 65.7 | 1,348 ft |
| May | 62.7 | 1,154 ft | 73.9 | 1,871 ft |
| June | 71.8 | 1,738 ft | 83.0 | 2,440 ft |
| July | 74.5 | 1,909 ft | 85.0 | 2,564 ft |
| August | 73.2 | 1,827 ft | 84.7 | 2,545 ft |
| September | 66.2 | 1,380 ft | 78.7 | 2,173 ft |
| October | 55.3 | 670 ft | 67.3 | 1,451 ft |
| November | 44.2 | −73 ft | 54.8 | 637 ft |
| December | 35.0 | −704 ft | 43.7 | −107 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 KRZT
DENSITY ALTITUDE
Field elevation 725 ft — the air behaves like 2,564 ft.
- PRESSURE ALT
- 726 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
- KCYO — Pickaway County Meml
Circleville · elev 685 ft
- KEOP — Pike County
Waverly · elev 661 ft
- I23 — Fayette County
Washington Court House · elev 980 ft
- KLCK — Rickenbacker International
Columbus · elev 744 ft
- KLHQ — Fairfield County
Lancaster · elev 868 ft
- 22I — Vinton County
Mc Arthur · elev 954 ft
- KTZR — Bolton Field
Columbus · elev 904 ft
- KHOC — Highland County
Hillsboro · elev 977 ft
Frequently asked questions
How high does density altitude get at KRZT in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Ross County 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 KRZT on an average day?
It swings with the seasons: from roughly −1,046 ft at the coldest month's average temperature to about 1,909 ft at the warmest month's — all from a constant field elevation of 725 ft. The month-by-month table above carries the full year.
What is the field elevation of Ross County?
725 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRZT (ICAO) / RZT (FAA), in Chillicothe, Ohio.