Twisp, Washington · field elev 1,602 ft
Density Altitude at Twisp Municipal (2S0)
Twisp Municipal sits at 1,602 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 3,682 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 | 22.6 | −479 ft | 29.9 | 35 ft |
| February | 28.2 | −83 ft | 38.4 | 622 ft |
| March | 37.7 | 574 ft | 50.0 | 1,403 ft |
| April | 46.7 | 1,183 ft | 61.1 | 2,130 ft |
| May | 55.4 | 1,759 ft | 71.1 | 2,769 ft |
| June | 61.3 | 2,143 ft | 76.7 | 3,120 ft |
| July | 68.3 | 2,592 ft | 85.8 | 3,682 ft |
| August | 67.5 | 2,541 ft | 85.6 | 3,669 ft |
| September | 59.1 | 2,001 ft | 77.0 | 3,139 ft |
| October | 46.4 | 1,163 ft | 60.9 | 2,117 ft |
| November | 32.9 | 244 ft | 41.2 | 813 ft |
| December | 22.3 | −500 ft | 29.2 | −13 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 2S0
DENSITY ALTITUDE
Field elevation 1,602 ft — the air behaves like 3,694 ft.
- PRESSURE ALT
- 1,603 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
- S52 — Methow Valley State
Winthrop · elev 1,706 ft
- S97 — Anderson Field
Brewster · elev 920 ft
- S35 — Okanogan Legion
Okanogan · elev 1,042 ft
- KOMK — Omak
Omak · elev 1,305 ft
- W12 — Lost River
Mazama · elev 2,415 ft
- 6S9 — Stehekin State
Stehekin · elev 1,230 ft
- S10 — Lake Chelan
Chelan · elev 1,263 ft
- W01 — Tonasket Municipal
Tonasket · elev 1,311 ft
Frequently asked questions
How high does density altitude get at 2S0 in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Twisp Municipal reaches roughly 3,682 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 2S0 on an average day?
It swings with the seasons: from roughly −500 ft at the coldest month's average temperature to about 2,592 ft at the warmest month's — all from a constant field elevation of 1,602 ft. The month-by-month table above carries the full year.
What is the field elevation of Twisp Municipal?
1,602 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 2S0 (FAA), in Twisp, Washington.