Red Oak, Iowa · field elev 1,045 ft
Density Altitude at Red Oak Municipal (KRDK)
Red Oak Municipal sits at 1,045 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 3,034 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 | 22.7 | −1,170 ft | 32.8 | −458 ft |
| February | 27.1 | −857 ft | 37.8 | −112 ft |
| March | 39.3 | −9 ft | 50.9 | 774 ft |
| April | 50.7 | 761 ft | 63.2 | 1,580 ft |
| May | 62.1 | 1,509 ft | 73.4 | 2,232 ft |
| June | 72.1 | 2,150 ft | 82.8 | 2,819 ft |
| July | 75.9 | 2,389 ft | 86.3 | 3,034 ft |
| August | 73.7 | 2,251 ft | 84.7 | 2,936 ft |
| September | 65.8 | 1,748 ft | 78.4 | 2,545 ft |
| October | 53.2 | 926 ft | 65.7 | 1,742 ft |
| November | 39.1 | −23 ft | 50.3 | 734 ft |
| December | 27.6 | −822 ft | 37.4 | −140 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 KRDK
DENSITY ALTITUDE
Field elevation 1,045 ft — the air behaves like 3,015 ft.
- PRESSURE ALT
- 1,046 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
- KSDA — Shenandoah Municipal
Shenandoah · elev 971 ft
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- KCRZ — Corning Municipal
Corning · elev 1,274 ft
- KAIO — Atlantic Municipal
Atlantic · elev 1,165 ft
- KCBF — Council Bluffs Municipal
Council Bluffs · elev 1,245 ft
- Y46 — Bedford Municipal
Bedford · elev 1,201 ft
- Y43 — Anita Municipal-Kevin Burke Meml Field
Anita · elev 1,251 ft
- KHNR — Harlan Municipal
Harlan · elev 1,231 ft
Frequently asked questions
How high does density altitude get at KRDK in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Red Oak Municipal reaches roughly 3,034 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 KRDK on an average day?
It swings with the seasons: from roughly −1,170 ft at the coldest month's average temperature to about 2,389 ft at the warmest month's — all from a constant field elevation of 1,045 ft. The month-by-month table above carries the full year.
What is the field elevation of Red Oak Municipal?
1,045 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRDK (ICAO) / RDK (FAA), in Red Oak, Iowa.