Audubon, Iowa · field elev 1,288 ft
Density Altitude at Audubon County (KADU)
Audubon County sits at 1,288 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 3,103 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 | 18.4 | −1,173 ft | 28.0 | −490 ft |
| February | 22.7 | −865 ft | 32.6 | −168 ft |
| March | 35.3 | 18 ft | 46.3 | 767 ft |
| April | 47.4 | 841 ft | 59.7 | 1,653 ft |
| May | 58.9 | 1,601 ft | 70.2 | 2,327 ft |
| June | 68.9 | 2,245 ft | 79.6 | 2,917 ft |
| July | 72.1 | 2,447 ft | 82.6 | 3,103 ft |
| August | 69.8 | 2,302 ft | 80.7 | 2,985 ft |
| September | 62.3 | 1,821 ft | 74.7 | 2,611 ft |
| October | 49.5 | 981 ft | 62.0 | 1,802 ft |
| November | 35.5 | 32 ft | 46.3 | 767 ft |
| December | 23.7 | −794 ft | 33.0 | −141 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 KADU
DENSITY ALTITUDE
Field elevation 1,288 ft — the air behaves like 3,127 ft.
- PRESSURE ALT
- 1,289 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
- Y43 — Anita Municipal-Kevin Burke Meml Field
Anita · elev 1,251 ft
- KAIO — Atlantic Municipal
Atlantic · elev 1,165 ft
- KHNR — Harlan Municipal
Harlan · elev 1,231 ft
- KCIN — Arthur N Neu
Carroll · elev 1,204 ft
- KGCT — Guthrie County Regional
Guthrie Center · elev 1,221 ft
- KDNS — Denison Municipal
Denison · elev 1,274 ft
- KGFZ — Greenfield Municipal
Greenfield · elev 1,364 ft
- KEFW — Jefferson Municipal
Jefferson · elev 1,047 ft
Frequently asked questions
How high does density altitude get at KADU in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Audubon County reaches roughly 3,103 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 KADU on an average day?
It swings with the seasons: from roughly −1,173 ft at the coldest month's average temperature to about 2,447 ft at the warmest month's — all from a constant field elevation of 1,288 ft. The month-by-month table above carries the full year.
What is the field elevation of Audubon County?
1,288 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KADU (ICAO) / ADU (FAA), in Audubon, Iowa.