Langley, Washington · field elev 271 ft
Density Altitude at Whidbey Air Park (W10)
Whidbey Air Park sits at 271 ft, and even a typical August afternoon (76 °F) only lifts density altitude to about 1,429 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 | 41.2 | −842 ft | 47.9 | −386 ft |
| February | 42.5 | −753 ft | 50.4 | −218 ft |
| March | 45.9 | −522 ft | 54.5 | 56 ft |
| April | 50.5 | −211 ft | 59.6 | 392 ft |
| May | 56.4 | 181 ft | 65.8 | 796 ft |
| June | 60.8 | 471 ft | 69.8 | 1,053 ft |
| July | 65.1 | 751 ft | 74.8 | 1,372 ft |
| August | 65.4 | 770 ft | 75.7 | 1,429 ft |
| September | 60.0 | 418 ft | 70.4 | 1,092 ft |
| October | 52.0 | −111 ft | 60.7 | 464 ft |
| November | 45.0 | −583 ft | 52.4 | −84 ft |
| December | 40.4 | −897 ft | 46.7 | −467 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 W10
DENSITY ALTITUDE
Field elevation 271 ft — the air behaves like 1,448 ft.
- PRESSURE ALT
- 272 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
- KPAE — Seattle Paine Field International
Everett · elev 607 ft
- KAWO — Arlington Municipal
Arlington · elev 142 ft
- 13W — Camano Island Airfield
Stanwood · elev 145 ft
- S43 — Harvey Field
Snohomish · elev 23 ft
- 0S9 — Jefferson County International
Port Townsend · elev 110 ft
- KOKH — Delaurentis
Oak Harbor · elev 193 ft
- W16 — First Air Field
Monroe · elev 50 ft
- 8W5 — Apex Airpark
Silverdale · elev 525 ft
Frequently asked questions
How high does density altitude get at W10 in summer?
On a typical August afternoon — around 76 °F at the nearest NOAA normals station — density altitude at Whidbey Air Park reaches roughly 1,429 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 W10 on an average day?
It swings with the seasons: from roughly −897 ft at the coldest month's average temperature to about 770 ft at the warmest month's — all from a constant field elevation of 271 ft. The month-by-month table above carries the full year.
What is the field elevation of Whidbey Air Park?
271 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is W10 (FAA), in Langley, Washington.