Ione, Washington · field elev 2,110 ft
Density Altitude at Ione Municipal (S23)
Ione Municipal sits at 2,110 ft, and even a typical August afternoon (85 °F) only lifts density altitude to about 4,227 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 | 26.7 | 446 ft | 32.6 | 856 ft |
| February | 29.9 | 670 ft | 38.3 | 1,247 ft |
| March | 37.1 | 1,165 ft | 47.5 | 1,865 ft |
| April | 45.3 | 1,719 ft | 58.0 | 2,555 ft |
| May | 54.0 | 2,294 ft | 67.2 | 3,145 ft |
| June | 60.1 | 2,691 ft | 72.4 | 3,473 ft |
| July | 67.8 | 3,183 ft | 83.6 | 4,166 ft |
| August | 67.2 | 3,145 ft | 84.6 | 4,227 ft |
| September | 57.8 | 2,542 ft | 72.9 | 3,504 ft |
| October | 45.2 | 1,712 ft | 55.7 | 2,405 ft |
| November | 34.2 | 967 ft | 40.3 | 1,383 ft |
| December | 26.8 | 453 ft | 32.2 | 829 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 S23
DENSITY ALTITUDE
Field elevation 2,110 ft — the air behaves like 4,251 ft.
- PRESSURE ALT
- 2,111 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 Washington fields
- 09S — Sullivan Lake State
Metaline Falls · elev 2,614 ft
- 63S — Colville Municipal
Colville · elev 1,883 ft
- 1S9 — Chewelah Municipal
Chewelah · elev 2,084 ft
- 69S — Avey Field
Laurier · elev 1,655 ft
- KDEW — Deer Park
Deer Park · elev 2,211 ft
- R49 — Ferry County
Republic · elev 2,522 ft
- 70S — Mead Flying Service
Mead · elev 1,905 ft
- KSFF — Felts Field
Spokane · elev 1,957 ft
Frequently asked questions
How high does density altitude get at S23 in summer?
On a typical August afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Ione Municipal reaches roughly 4,227 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 S23 on an average day?
It swings with the seasons: from roughly 446 ft at the coldest month's average temperature to about 3,183 ft at the warmest month's — all from a constant field elevation of 2,110 ft. The month-by-month table above carries the full year.
What is the field elevation of Ione Municipal?
2,110 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S23 (FAA), in Ione, Washington.