Darrington, Washington · field elev 553 ft
Density Altitude at Darrington Municipal (1S2)
Darrington Municipal sits at 553 ft, and even a typical August afternoon (79 °F) only lifts density altitude to about 1,975 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 | 35.3 | −898 ft | 40.4 | −546 ft |
| February | 37.7 | −732 ft | 44.8 | −246 ft |
| March | 42.3 | −416 ft | 50.9 | 165 ft |
| April | 48.4 | −3 ft | 58.7 | 681 ft |
| May | 55.6 | 477 ft | 66.9 | 1,214 ft |
| June | 60.3 | 786 ft | 71.0 | 1,476 ft |
| July | 65.7 | 1,137 ft | 78.1 | 1,925 ft |
| August | 66.3 | 1,175 ft | 78.9 | 1,975 ft |
| September | 59.6 | 740 ft | 71.7 | 1,521 ft |
| October | 49.0 | 37 ft | 57.6 | 609 ft |
| November | 40.2 | −560 ft | 45.6 | −192 ft |
| December | 34.9 | −926 ft | 39.5 | −608 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 1S2
DENSITY ALTITUDE
Field elevation 553 ft — the air behaves like 1,981 ft.
- PRESSURE ALT
- 554 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
- 3W5 — Mears Field
Concrete · elev 267 ft
- KAWO — Arlington Municipal
Arlington · elev 142 ft
- W16 — First Air Field
Monroe · elev 50 ft
- S43 — Harvey Field
Snohomish · elev 23 ft
- 13W — Camano Island Airfield
Stanwood · elev 145 ft
- KPAE — Seattle Paine Field International
Everett · elev 607 ft
- S88 — Skykomish State
Skykomish · elev 1,002 ft
- KBVS — Skagit Regional
Burlington/Mount Vernon · elev 145 ft
Frequently asked questions
How high does density altitude get at 1S2 in summer?
On a typical August afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Darrington Municipal reaches roughly 1,975 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 1S2 on an average day?
It swings with the seasons: from roughly −926 ft at the coldest month's average temperature to about 1,175 ft at the warmest month's — all from a constant field elevation of 553 ft. The month-by-month table above carries the full year.
What is the field elevation of Darrington Municipal?
553 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1S2 (FAA), in Darrington, Washington.