Guthrie Center, Iowa · field elev 1,221 ft
Density Altitude at Guthrie County Regional (KGCT)
Guthrie County Regional sits at 1,221 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 3,175 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 | 19.6 | −1,171 ft | 29.7 | −454 ft |
| February | 24.2 | −842 ft | 34.6 | −113 ft |
| March | 36.5 | 18 ft | 47.5 | 765 ft |
| April | 48.7 | 845 ft | 61.0 | 1,655 ft |
| May | 60.1 | 1,596 ft | 71.8 | 2,346 ft |
| June | 70.4 | 2,258 ft | 81.7 | 2,965 ft |
| July | 74.1 | 2,491 ft | 85.1 | 3,175 ft |
| August | 71.2 | 2,308 ft | 82.7 | 3,027 ft |
| September | 63.5 | 1,816 ft | 76.6 | 2,648 ft |
| October | 50.7 | 978 ft | 63.6 | 1,823 ft |
| November | 36.8 | 38 ft | 47.7 | 778 ft |
| December | 25.3 | −764 ft | 34.9 | −93 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 KGCT
DENSITY ALTITUDE
Field elevation 1,221 ft — the air behaves like 3,169 ft.
- PRESSURE ALT
- 1,222 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
- KPRO — Perry Municipal
Perry · elev 1,013 ft
- KEFW — Jefferson Municipal
Jefferson · elev 1,047 ft
- Y43 — Anita Municipal-Kevin Burke Meml Field
Anita · elev 1,251 ft
- KGFZ — Greenfield Municipal
Greenfield · elev 1,364 ft
- KADU — Audubon County
Audubon · elev 1,288 ft
- KCIN — Arthur N Neu
Carroll · elev 1,204 ft
- 3Y3 — Winterset Municipal
Winterset · elev 1,116 ft
- KAIO — Atlantic Municipal
Atlantic · elev 1,165 ft
Frequently asked questions
How high does density altitude get at KGCT in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Guthrie County Regional reaches roughly 3,175 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 KGCT on an average day?
It swings with the seasons: from roughly −1,171 ft at the coldest month's average temperature to about 2,491 ft at the warmest month's — all from a constant field elevation of 1,221 ft. The month-by-month table above carries the full year.
What is the field elevation of Guthrie County Regional?
1,221 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGCT (ICAO) / GCT (FAA), in Guthrie Center, Iowa.