Enterprise, Oregon · field elev 3,957 ft
Density Altitude at Enterprise Municipal (8S4)
From a field elevation of 3,957 ft, a typical August afternoon at Enterprise Municipal (80 °F) raises density altitude to about 6,175 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 26.9 | 2,764 ft | 34.9 | 3,310 ft |
| February | 29.2 | 2,922 ft | 39.1 | 3,592 ft |
| March | 36.3 | 3,404 ft | 46.3 | 4,069 ft |
| April | 41.1 | 3,725 ft | 51.8 | 4,427 ft |
| May | 49.7 | 4,291 ft | 61.0 | 5,016 ft ▲ |
| June | 56.3 | 4,717 ft | 68.4 | 5,481 ft ▲ |
| July | 64.0 | 5,206 ft | 79.3 | 6,151 ft ▲ |
| August | 64.5 | 5,237 ft | 79.7 | 6,175 ft ▲ |
| September | 57.0 | 4,762 ft | 70.6 | 5,618 ft ▲ |
| October | 45.0 | 3,983 ft | 56.1 | 4,704 ft |
| November | 33.9 | 3,242 ft | 42.7 | 3,831 ft |
| December | 26.2 | 2,716 ft | 34.7 | 3,296 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 8S4
DENSITY ALTITUDE caution
Field elevation 3,957 ft — the air behaves like 6,194 ft.
- PRESSURE ALT
- 3,959 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
- KJSY — Joseph State
Joseph · elev 4,126 ft
- 68D — Reds Horse Ranch Usfs
Enterprise · elev 3,613 ft
- O62 — B & H Usfs
Enterprise · elev 4,007 ft
- 25U — Memaloose Usfs
Imnaha · elev 6,708 ft
- O68 — Sluice Creek
Imnaha · elev 1,370 ft
- OR9 — Lord Flat Usfs
Imnaha · elev 5,594 ft
- KLGD — La Grande/Union County
La Grande · elev 2,718 ft
- O48 — Salmon Bar
Imnaha · elev 947 ft
Frequently asked questions
How high does density altitude get at 8S4 in summer?
On a typical August afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Enterprise Municipal reaches roughly 6,175 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 8S4 on an average day?
It swings with the seasons: from roughly 2,716 ft at the coldest month's average temperature to about 5,237 ft at the warmest month's — all from a constant field elevation of 3,957 ft. The month-by-month table above carries the full year.
What is the field elevation of Enterprise Municipal?
3,957 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8S4 (FAA), in Enterprise, Oregon.