Milford, Iowa · field elev 1,439 ft
Density Altitude at Fuller (4D8)
Fuller sits at 1,439 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 3,287 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 | 15.9 | −1,164 ft | 24.4 | −555 ft |
| February | 20.3 | −847 ft | 28.9 | −238 ft |
| March | 32.7 | 27 ft | 41.9 | 658 ft |
| April | 46.2 | 948 ft | 57.2 | 1,676 ft |
| May | 58.6 | 1,767 ft | 69.5 | 2,468 ft |
| June | 68.8 | 2,423 ft | 79.0 | 3,064 ft |
| July | 72.5 | 2,658 ft | 82.6 | 3,287 ft |
| August | 70.0 | 2,500 ft | 80.0 | 3,126 ft |
| September | 62.8 | 2,039 ft | 73.9 | 2,746 ft |
| October | 49.3 | 1,155 ft | 60.0 | 1,858 ft |
| November | 33.8 | 103 ft | 43.1 | 739 ft |
| December | 21.1 | −790 ft | 29.0 | −231 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 4D8
DENSITY ALTITUDE
Field elevation 1,439 ft — the air behaves like 3,311 ft.
- PRESSURE ALT
- 1,440 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
- 0F3 — Spirit Lake Municipal
Spirit Lake · elev 1,434 ft
- KSPW — Spencer Municipal
Spencer · elev 1,339 ft
- KEST — Estherville Municipal
Estherville · elev 1,319 ft
- KEGQ — Emmetsburg Municipal
Emmetsburg · elev 1,206 ft
- KISB — Sibley Municipal
Sibley · elev 1,538 ft
- 8Y8 — Peltz Field
Ringsted · elev 1,280 ft
- 1Y9 — Paullina Municipal
Paullina · elev 1,385 ft
- KSHL — Sheldon Regional
Sheldon · elev 1,419 ft
Frequently asked questions
How high does density altitude get at 4D8 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Fuller reaches roughly 3,287 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 4D8 on an average day?
It swings with the seasons: from roughly −1,164 ft at the coldest month's average temperature to about 2,658 ft at the warmest month's — all from a constant field elevation of 1,439 ft. The month-by-month table above carries the full year.
What is the field elevation of Fuller?
1,439 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4D8 (FAA), in Milford, Iowa.