Ottumwa, Iowa · field elev 846 ft
Density Altitude at Ottumwa Regional (KOTM)
Ottumwa Regional sits at 846 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,755 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 | 22.9 | −1,405 ft | 32.0 | −762 ft |
| February | 27.4 | −1,085 ft | 36.8 | −429 ft |
| March | 39.6 | −236 ft | 50.2 | 481 ft |
| April | 51.1 | 541 ft | 62.8 | 1,310 ft |
| May | 62.0 | 1,258 ft | 72.9 | 1,956 ft |
| June | 71.6 | 1,874 ft | 82.2 | 2,539 ft |
| July | 75.1 | 2,095 ft | 85.7 | 2,755 ft |
| August | 73.0 | 1,963 ft | 84.0 | 2,650 ft |
| September | 65.3 | 1,471 ft | 77.3 | 2,233 ft |
| October | 52.9 | 661 ft | 64.2 | 1,400 ft |
| November | 39.6 | −236 ft | 49.7 | 447 ft |
| December | 28.4 | −1,015 ft | 37.2 | −401 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 KOTM
DENSITY ALTITUDE
Field elevation 846 ft — the air behaves like 2,773 ft.
- PRESSURE ALT
- 847 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
- KOOA — Oskaloosa Municipal
Oskaloosa · elev 840 ft
- 4C8 — Albia Municipal
Albia · elev 964 ft
- KFFL — Fairfield Municipal
Fairfield · elev 801 ft
- 4K6 — Bloomfield Municipal
Bloomfield · elev 888 ft
- KPEA — Pella Municipal
Pella · elev 885 ft
- 6K9 — Keosauqua Municipal
Keosauqua · elev 580 ft
- KOXV — Knoxville Municipal
Knoxville · elev 928 ft
- KTVK — Centerville Municipal
Centerville · elev 1,023 ft
Frequently asked questions
How high does density altitude get at KOTM in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Ottumwa Regional reaches roughly 2,755 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 KOTM on an average day?
It swings with the seasons: from roughly −1,405 ft at the coldest month's average temperature to about 2,095 ft at the warmest month's — all from a constant field elevation of 846 ft. The month-by-month table above carries the full year.
What is the field elevation of Ottumwa Regional?
846 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KOTM (ICAO) / OTM (FAA), in Ottumwa, Iowa.