Scappoose, Oregon · field elev 58 ft
Density Altitude at Scappoose (KSPB)
Scappoose sits at 58 ft, and even a typical August afternoon (82 °F) only lifts density altitude to about 1,564 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 | 40.3 | −1,169 ft | 46.8 | −725 ft |
| February | 42.7 | −1,004 ft | 51.2 | −428 ft |
| March | 46.6 | −739 ft | 56.3 | −88 ft |
| April | 50.5 | −475 ft | 61.0 | 221 ft |
| May | 57.2 | −29 ft | 68.2 | 689 ft |
| June | 61.8 | 274 ft | 73.1 | 1,003 ft |
| July | 67.7 | 657 ft | 81.0 | 1,501 ft |
| August | 68.2 | 689 ft | 82.0 | 1,564 ft |
| September | 63.0 | 352 ft | 76.3 | 1,206 ft |
| October | 53.2 | −295 ft | 63.6 | 391 ft |
| November | 44.8 | −861 ft | 52.6 | −335 ft |
| December | 39.9 | −1,197 ft | 46.1 | −773 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 KSPB
DENSITY ALTITUDE
Field elevation 58 ft — the air behaves like 1,564 ft.
- PRESSURE ALT
- 59 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
- 4S4 — Skyport
Cornelius · elev 174 ft
- KHIO — Portland-Hillsboro
Portland · elev 208 ft
- KPDX — Portland International
Portland · elev 31 ft
- 05S — Vernonia Municipal
Vernonia · elev 650 ft
- 7S3 — Stark'S Twin Oaks Airpark
Hillsboro · elev 170 ft
- KTTD — Portland-Troutdale
Portland · elev 39 ft
- 17S — Chehalem Airpark
Newberg · elev 190 ft
- 2S6 — Sportsman Airpark
Newberg · elev 181 ft
Frequently asked questions
How high does density altitude get at KSPB in summer?
On a typical August afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Scappoose reaches roughly 1,564 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 KSPB on an average day?
It swings with the seasons: from roughly −1,197 ft at the coldest month's average temperature to about 689 ft at the warmest month's — all from a constant field elevation of 58 ft. The month-by-month table above carries the full year.
What is the field elevation of Scappoose?
58 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSPB (ICAO) / SPB (FAA), in Scappoose, Oregon.