Mc Dermitt, Oregon · field elev 4,478 ft
Density Altitude at Mc Dermitt State (26U)
From a field elevation of 4,478 ft, a typical July afternoon at Mc Dermitt State (92 °F) raises density altitude to about 7,529 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 | 29.0 | 3,557 ft | 40.7 | 4,343 ft |
| February | 33.5 | 3,862 ft | 46.1 | 4,698 ft |
| March | 40.1 | 4,303 ft | 54.8 | 5,261 ft ▲ |
| April | 45.1 | 4,633 ft | 61.0 | 5,655 ft ▲ |
| May | 53.9 | 5,203 ft | 70.9 | 6,272 ft ▲ |
| June | 61.7 | 5,699 ft | 80.6 | 6,863 ft ▲ |
| July | 70.6 | 6,253 ft | 91.8 | 7,529 ft ▲ |
| August | 67.8 | 6,080 ft | 90.1 | 7,429 ft ▲ |
| September | 58.9 | 5,522 ft | 80.8 | 6,875 ft ▲ |
| October | 46.6 | 4,731 ft | 66.2 | 5,981 ft ▲ |
| November | 36.2 | 4,043 ft | 50.8 | 5,004 ft ▲ |
| December | 28.0 | 3,488 ft | 39.6 | 4,270 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 26U
DENSITY ALTITUDE caution
Field elevation 4,478 ft — the air behaves like 7,541 ft.
- PRESSURE ALT
- 4,480 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
- KREO — Rome State
Rome · elev 4,053 ft
- 28U — Owyhee Reservoir State
Owyhee · elev 2,680 ft
- KBNO — Burns Municipal
Burns · elev 4,148 ft
- S49 — Miller Meml Airpark
Vale · elev 2,249 ft
- R03 — Alkali Lake State
Alkali Lake · elev 4,312 ft
- KLKV — Lake County
Lakeview · elev 4,734 ft
- KONO — Ontario Municipal
Ontario · elev 2,193 ft
- 22S — Paisley
Paisley · elev 4,395 ft
Frequently asked questions
How high does density altitude get at 26U in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Mc Dermitt State reaches roughly 7,529 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 26U on an average day?
It swings with the seasons: from roughly 3,488 ft at the coldest month's average temperature to about 6,253 ft at the warmest month's — all from a constant field elevation of 4,478 ft. The month-by-month table above carries the full year.
What is the field elevation of Mc Dermitt State?
4,478 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 26U (FAA), in Mc Dermitt, Oregon.