Easton, Washington · field elev 2,226 ft
Density Altitude at Easton State (KESW)
Easton State sits at 2,226 ft, and even a typical August afternoon (76 °F) only lifts density altitude to about 3,845 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 | 30.0 | 821 ft | 35.5 | 1,200 ft |
| February | 32.8 | 1,015 ft | 40.1 | 1,513 ft |
| March | 37.3 | 1,323 ft | 46.0 | 1,909 ft |
| April | 42.5 | 1,675 ft | 52.5 | 2,339 ft |
| May | 50.0 | 2,175 ft | 61.0 | 2,891 ft |
| June | 56.0 | 2,568 ft | 66.9 | 3,268 ft |
| July | 63.0 | 3,020 ft | 75.5 | 3,808 ft |
| August | 63.0 | 3,020 ft | 76.1 | 3,845 ft |
| September | 56.2 | 2,581 ft | 69.0 | 3,401 ft |
| October | 45.6 | 1,883 ft | 56.0 | 2,568 ft |
| November | 35.9 | 1,227 ft | 42.5 | 1,675 ft |
| December | 30.1 | 828 ft | 35.2 | 1,180 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 KESW
DENSITY ALTITUDE
Field elevation 2,226 ft — the air behaves like 3,839 ft.
- PRESSURE ALT
- 2,227 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
- S93 — Cle Elum Municipal
Cle Elum · elev 1,945 ft
- 2W1 — De Vere Field
Cle Elum · elev 1,800 ft
- 4W0 — Bandera State
Bandera · elev 1,636 ft
- 21W — Ranger Creek
Greenwater · elev 2,650 ft
- S88 — Skykomish State
Skykomish · elev 1,002 ft
- KELN — Bowers Field
Ellensburg · elev 1,763 ft
- 8S2 — Cashmere-Dryden
Cashmere · elev 858 ft
- 4S6 — Tieton State
Rimrock · elev 2,964 ft
Frequently asked questions
How high does density altitude get at KESW in summer?
On a typical August afternoon — around 76 °F at the nearest NOAA normals station — density altitude at Easton State reaches roughly 3,845 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 KESW on an average day?
It swings with the seasons: from roughly 821 ft at the coldest month's average temperature to about 3,020 ft at the warmest month's — all from a constant field elevation of 2,226 ft. The month-by-month table above carries the full year.
What is the field elevation of Easton State?
2,226 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KESW (ICAO) / ESW (FAA), in Easton, Washington.