Imnaha, Oregon · field elev 1,022 ft
Density Altitude at Dug Bar Usfs (OR8)
Dug Bar Usfs sits at 1,022 ft, and even a typical August afternoon (91 °F) only lifts density altitude to about 3,274 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 | 32.0 | −542 ft | 37.5 | −161 ft |
| February | 38.2 | −113 ft | 46.4 | 444 ft |
| March | 43.8 | 269 ft | 54.9 | 1,010 ft |
| April | 50.2 | 699 ft | 63.0 | 1,539 ft |
| May | 58.5 | 1,247 ft | 72.9 | 2,172 ft |
| June | 64.4 | 1,630 ft | 79.0 | 2,555 ft |
| July | 71.4 | 2,077 ft | 90.4 | 3,256 ft |
| August | 71.4 | 2,077 ft | 90.7 | 3,274 ft |
| September | 62.6 | 1,513 ft | 79.7 | 2,598 ft |
| October | 49.6 | 659 ft | 61.8 | 1,462 ft |
| November | 37.9 | −134 ft | 44.8 | 336 ft |
| December | 31.0 | −612 ft | 36.0 | −265 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 OR8
DENSITY ALTITUDE
Field elevation 1,022 ft — the air behaves like 3,292 ft.
- PRESSURE ALT
- 1,023 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
- O48 — Salmon Bar
Imnaha · elev 947 ft
- OR9 — Lord Flat Usfs
Imnaha · elev 5,594 ft
- O29 — Pittsburg Landing
Imnaha · elev 1,185 ft
- O62 — B & H Usfs
Enterprise · elev 4,007 ft
- O68 — Sluice Creek
Imnaha · elev 1,370 ft
- 25U — Memaloose Usfs
Imnaha · elev 6,708 ft
- 8S4 — Enterprise Municipal
Enterprise · elev 3,957 ft
- KJSY — Joseph State
Joseph · elev 4,126 ft
Frequently asked questions
How high does density altitude get at OR8 in summer?
On a typical August afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Dug Bar Usfs reaches roughly 3,274 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 OR8 on an average day?
It swings with the seasons: from roughly −612 ft at the coldest month's average temperature to about 2,077 ft at the warmest month's — all from a constant field elevation of 1,022 ft. The month-by-month table above carries the full year.
What is the field elevation of Dug Bar Usfs?
1,022 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is OR8 (FAA), in Imnaha, Oregon.