Harrison, Arkansas · field elev 1,365 ft
Density Altitude at Boone County (KHRO)
Boone County sits at 1,365 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 3,594 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 | 37.0 | 231 ft | 46.9 | 903 ft |
| February | 40.9 | 498 ft | 51.2 | 1,190 ft |
| March | 49.2 | 1,057 ft | 60.3 | 1,787 ft |
| April | 58.3 | 1,657 ft | 69.6 | 2,384 ft |
| May | 66.2 | 2,167 ft | 76.6 | 2,824 ft |
| June | 74.4 | 2,687 ft | 84.9 | 3,338 ft |
| July | 78.5 | 2,943 ft | 89.1 | 3,594 ft |
| August | 77.6 | 2,887 ft | 88.7 | 3,570 ft |
| September | 69.9 | 2,403 ft | 81.4 | 3,123 ft |
| October | 59.4 | 1,728 ft | 70.8 | 2,460 ft |
| November | 48.5 | 1,010 ft | 59.0 | 1,702 ft |
| December | 39.7 | 416 ft | 49.2 | 1,057 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 KHRO
DENSITY ALTITUDE
Field elevation 1,365 ft — the air behaves like 3,588 ft.
- PRESSURE ALT
- 1,366 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 Arkansas fields
- 17A — Trigger Gap
Berryville · elev 1,650 ft
- 4M1 — Carroll County
Berryville · elev 1,206 ft
- KFLP — Marion County Regional
Flippin · elev 720 ft
- 3M0 — Gastons
Lakeview · elev 479 ft
- H34 — Huntsville Municipal
Huntsville · elev 1,748 ft
- 4A5 — Searcy County
Marshall · elev 964 ft
- KBPK — Baxter County
Mountain Home · elev 928 ft
- KROG — Rogers Exec - Carter Field
Rogers · elev 1,359 ft
Frequently asked questions
How high does density altitude get at KHRO in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Boone County reaches roughly 3,594 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 KHRO on an average day?
It swings with the seasons: from roughly 231 ft at the coldest month's average temperature to about 2,943 ft at the warmest month's — all from a constant field elevation of 1,365 ft. The month-by-month table above carries the full year.
What is the field elevation of Boone County?
1,365 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHRO (ICAO) / HRO (FAA), in Harrison, Arkansas.