Winterset, Iowa · field elev 1,116 ft
Density Altitude at Winterset Municipal (3Y3)
Winterset Municipal sits at 1,116 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,967 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 | 19.9 | −1,281 ft | 29.9 | −572 ft |
| February | 24.0 | −988 ft | 34.8 | −230 ft |
| March | 36.2 | −134 ft | 47.6 | 641 ft |
| April | 48.0 | 668 ft | 60.5 | 1,493 ft |
| May | 59.4 | 1,421 ft | 70.8 | 2,154 ft |
| June | 69.2 | 2,053 ft | 80.0 | 2,732 ft |
| July | 73.0 | 2,294 ft | 83.8 | 2,967 ft |
| August | 70.9 | 2,161 ft | 82.3 | 2,874 ft |
| September | 63.1 | 1,661 ft | 75.6 | 2,457 ft |
| October | 50.8 | 855 ft | 63.3 | 1,674 ft |
| November | 37.1 | −72 ft | 48.1 | 675 ft |
| December | 25.5 | −882 ft | 35.1 | −210 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 3Y3
DENSITY ALTITUDE
Field elevation 1,116 ft — the air behaves like 2,979 ft.
- PRESSURE ALT
- 1,117 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
- KDSM — Des Moines International
Des Moines · elev 958 ft
- KGFZ — Greenfield Municipal
Greenfield · elev 1,364 ft
- 6Z6 — Nash Field Indianola
Indianola · elev 991 ft
- I75 — Osceola Municipal
Osceola · elev 1,115 ft
- KCSQ — Creston Municipal
Creston · elev 1,300 ft
- KGCT — Guthrie County Regional
Guthrie Center · elev 1,221 ft
- KIKV — Ankeny Regional
Ankeny · elev 910 ft
- KPRO — Perry Municipal
Perry · elev 1,013 ft
Frequently asked questions
How high does density altitude get at 3Y3 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Winterset Municipal reaches roughly 2,967 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 3Y3 on an average day?
It swings with the seasons: from roughly −1,281 ft at the coldest month's average temperature to about 2,294 ft at the warmest month's — all from a constant field elevation of 1,116 ft. The month-by-month table above carries the full year.
What is the field elevation of Winterset Municipal?
1,116 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3Y3 (FAA), in Winterset, Iowa.