Knoxville, Iowa · field elev 928 ft
Density Altitude at Knoxville Municipal (KOXV)
Knoxville Municipal sits at 928 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,787 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 | 21.2 | −1,424 ft | 29.9 | −807 ft |
| February | 26.0 | −1,082 ft | 35.1 | −444 ft |
| March | 37.6 | −272 ft | 47.6 | 408 ft |
| April | 49.9 | 562 ft | 60.6 | 1,268 ft |
| May | 61.1 | 1,300 ft | 70.9 | 1,930 ft |
| June | 70.9 | 1,930 ft | 80.6 | 2,539 ft |
| July | 75.1 | 2,196 ft | 84.6 | 2,787 ft |
| August | 72.9 | 2,057 ft | 82.7 | 2,670 ft |
| September | 65.3 | 1,572 ft | 76.2 | 2,265 ft |
| October | 52.6 | 742 ft | 63.0 | 1,424 ft |
| November | 39.0 | −175 ft | 48.1 | 442 ft |
| December | 27.2 | −997 ft | 35.5 | −416 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 KOXV
DENSITY ALTITUDE
Field elevation 928 ft — the air behaves like 2,811 ft.
- PRESSURE ALT
- 929 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 Iowa fields
- KPEA — Pella Municipal
Pella · elev 885 ft
- KCNC — Chariton Municipal
Chariton · elev 1,051 ft
- 8C2 — Sully Municipal
Sully · elev 922 ft
- 6Z6 — Nash Field Indianola
Indianola · elev 991 ft
- KTNU — Newton Municipal-Earl Johnson Field
Newton · elev 953 ft
- 4C8 — Albia Municipal
Albia · elev 964 ft
- KOOA — Oskaloosa Municipal
Oskaloosa · elev 840 ft
- KDSM — Des Moines International
Des Moines · elev 958 ft
Frequently asked questions
How high does density altitude get at KOXV in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Knoxville Municipal reaches roughly 2,787 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 KOXV on an average day?
It swings with the seasons: from roughly −1,424 ft at the coldest month's average temperature to about 2,196 ft at the warmest month's — all from a constant field elevation of 928 ft. The month-by-month table above carries the full year.
What is the field elevation of Knoxville Municipal?
928 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KOXV (ICAO) / OXV (FAA), in Knoxville, Iowa.