Arlington, Oregon · field elev 890 ft
Density Altitude at Arlington Municipal (1S8)
Arlington Municipal sits at 890 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 3,041 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 | −478 ft | 40.8 | −99 ft |
| February | 38.7 | −243 ft | 46.9 | 314 ft |
| March | 45.6 | 227 ft | 55.6 | 893 ft |
| April | 52.8 | 708 ft | 63.7 | 1,422 ft |
| May | 61.7 | 1,292 ft | 73.2 | 2,029 ft |
| June | 68.2 | 1,711 ft | 79.7 | 2,437 ft |
| July | 76.3 | 2,225 ft | 89.5 | 3,041 ft |
| August | 75.5 | 2,174 ft | 88.9 | 3,004 ft |
| September | 66.5 | 1,602 ft | 80.0 | 2,456 ft |
| October | 53.7 | 768 ft | 65.5 | 1,538 ft |
| November | 42.4 | 10 ft | 50.4 | 549 ft |
| December | 35.5 | −464 ft | 41.1 | −79 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 1S8
DENSITY ALTITUDE
Field elevation 890 ft — the air behaves like 3,071 ft.
- PRESSURE ALT
- 891 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 Oregon fields
- M50 — Boardman
Boardman · elev 396 ft
- 35S — Wasco State
Wasco · elev 1,503 ft
- 9S9 — Lexington
Lexington · elev 1,635 ft
- 3S9 — Condon State Pauling Field
Condon · elev 2,911 ft
- KHRI — Hermiston Municipal
Hermiston · elev 644 ft
- KDLS — Columbia Gorge Regional/The Dalles Municipal
The Dalles · elev 247 ft
- KPDT — Eastern Oregon Regional At Pendleton
Pendleton · elev 1,494 ft
- 4S2 — Ken Jernstedt Airfield
Hood River · elev 638 ft
Frequently asked questions
How high does density altitude get at 1S8 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Arlington Municipal reaches roughly 3,041 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 1S8 on an average day?
It swings with the seasons: from roughly −478 ft at the coldest month's average temperature to about 2,225 ft at the warmest month's — all from a constant field elevation of 890 ft. The month-by-month table above carries the full year.
What is the field elevation of Arlington Municipal?
890 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1S8 (FAA), in Arlington, Oregon.