Greenfield, Iowa · field elev 1,364 ft
Density Altitude at Greenfield Municipal (KGFZ)
Greenfield Municipal sits at 1,364 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 3,300 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 | 20.2 | −948 ft | 29.6 | −283 ft |
| February | 24.8 | −621 ft | 34.6 | 65 ft |
| March | 37.6 | 271 ft | 48.2 | 989 ft |
| April | 49.2 | 1,055 ft | 60.6 | 1,805 ft |
| May | 60.5 | 1,798 ft | 70.9 | 2,465 ft |
| June | 70.3 | 2,427 ft | 80.4 | 3,059 ft |
| July | 74.3 | 2,679 ft | 84.3 | 3,300 ft |
| August | 72.3 | 2,553 ft | 82.5 | 3,189 ft |
| September | 64.7 | 2,069 ft | 76.0 | 2,786 ft |
| October | 52.3 | 1,261 ft | 63.8 | 2,012 ft |
| November | 37.6 | 271 ft | 47.7 | 955 ft |
| December | 25.4 | −578 ft | 34.4 | 51 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 KGFZ
DENSITY ALTITUDE
Field elevation 1,364 ft — the air behaves like 3,281 ft.
- PRESSURE ALT
- 1,365 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
- KCSQ — Creston Municipal
Creston · elev 1,300 ft
- 3Y3 — Winterset Municipal
Winterset · elev 1,116 ft
- KGCT — Guthrie County Regional
Guthrie Center · elev 1,221 ft
- KCRZ — Corning Municipal
Corning · elev 1,274 ft
- KAIO — Atlantic Municipal
Atlantic · elev 1,165 ft
- KADU — Audubon County
Audubon · elev 1,288 ft
- KPRO — Perry Municipal
Perry · elev 1,013 ft
Frequently asked questions
How high does density altitude get at KGFZ in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Greenfield Municipal reaches roughly 3,300 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 KGFZ on an average day?
It swings with the seasons: from roughly −948 ft at the coldest month's average temperature to about 2,679 ft at the warmest month's — all from a constant field elevation of 1,364 ft. The month-by-month table above carries the full year.
What is the field elevation of Greenfield Municipal?
1,364 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGFZ (ICAO) / GFZ (FAA), in Greenfield, Iowa.