Skykomish, Washington · field elev 1,002 ft
Density Altitude at Skykomish State (S88)
Skykomish State sits at 1,002 ft, and even a typical August afternoon (77 °F) only lifts density altitude to about 2,412 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 | 36.7 | −241 ft | 41.9 | 115 ft |
| February | 39.2 | −70 ft | 46.6 | 433 ft |
| March | 42.8 | 176 ft | 51.6 | 767 ft |
| April | 48.2 | 540 ft | 58.5 | 1,222 ft |
| May | 55.0 | 992 ft | 66.0 | 1,708 ft |
| June | 58.8 | 1,242 ft | 69.4 | 1,925 ft |
| July | 64.4 | 1,605 ft | 76.7 | 2,387 ft |
| August | 64.7 | 1,624 ft | 77.1 | 2,412 ft |
| September | 59.5 | 1,287 ft | 70.9 | 2,021 ft |
| October | 49.9 | 654 ft | 58.3 | 1,209 ft |
| November | 41.6 | 94 ft | 47.4 | 487 ft |
| December | 36.2 | −276 ft | 40.8 | 40 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 S88
DENSITY ALTITUDE
Field elevation 1,002 ft — the air behaves like 2,405 ft.
- PRESSURE ALT
- 1,003 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
- 4W0 — Bandera State
Bandera · elev 1,636 ft
- 27W — Lake Wenatchee State
Leavenworth · elev 1,939 ft
- KESW — Easton State
Easton · elev 2,226 ft
- W16 — First Air Field
Monroe · elev 50 ft
- S43 — Harvey Field
Snohomish · elev 23 ft
- 1S2 — Darrington Municipal
Darrington · elev 553 ft
- S93 — Cle Elum Municipal
Cle Elum · elev 1,945 ft
- 8S2 — Cashmere-Dryden
Cashmere · elev 858 ft
Frequently asked questions
How high does density altitude get at S88 in summer?
On a typical August afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Skykomish State reaches roughly 2,412 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 S88 on an average day?
It swings with the seasons: from roughly −276 ft at the coldest month's average temperature to about 1,624 ft at the warmest month's — all from a constant field elevation of 1,002 ft. The month-by-month table above carries the full year.
What is the field elevation of Skykomish State?
1,002 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S88 (FAA), in Skykomish, Washington.