Orogrande, Idaho · field elev 4,419 ft
Density Altitude at Orogrande (75C)
From a field elevation of 4,419 ft, a typical August afternoon at Orogrande (80 °F) raises density altitude to about 6,761 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 | 25.1 | 3,216 ft | 34.9 | 3,883 ft |
| February | 27.6 | 3,388 ft | 38.5 | 4,124 ft |
| March | 33.5 | 3,789 ft | 46.4 | 4,645 ft |
| April | 39.2 | 4,171 ft | 52.8 | 5,060 ft ▲ |
| May | 47.1 | 4,691 ft | 61.4 | 5,608 ft ▲ |
| June | 54.5 | 5,169 ft | 70.2 | 6,157 ft ▲ |
| July | 60.8 | 5,570 ft | 79.8 | 6,743 ft ▲ |
| August | 59.5 | 5,488 ft | 80.1 | 6,761 ft ▲ |
| September | 53.1 | 5,079 ft | 72.9 | 6,323 ft ▲ |
| October | 41.4 | 4,316 ft | 55.8 | 5,252 ft ▲ |
| November | 31.2 | 3,633 ft | 41.8 | 4,343 ft |
| December | 23.7 | 3,119 ft | 32.8 | 3,741 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 75C
DENSITY ALTITUDE caution
Field elevation 4,419 ft — the air behaves like 6,755 ft.
- PRESSURE ALT
- 4,421 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 Idaho fields
- S90 — Elk City
Elk City · elev 4,097 ft
- A05 — Dixie Usfs
Dixie · elev 5,148 ft
- C48 — Wilson Bar Usfs
Dixie · elev 2,275 ft
- U79 — Chamberlain Usfs
Chamberlain Guard Station · elev 5,765 ft
- KGIC — Idaho County
Grangeville · elev 3,313 ft
- 3U1 — Warren /Usfs/
Warren · elev 5,902 ft
- S82 — Kooskia Municipal
Kooskia · elev 1,263 ft
- 2U5 — Shearer /Usfs/
Shearer · elev 2,634 ft
Frequently asked questions
How high does density altitude get at 75C in summer?
On a typical August afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Orogrande reaches roughly 6,761 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 75C on an average day?
It swings with the seasons: from roughly 3,119 ft at the coldest month's average temperature to about 5,570 ft at the warmest month's — all from a constant field elevation of 4,419 ft. The month-by-month table above carries the full year.
What is the field elevation of Orogrande?
4,419 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 75C (FAA), in Orogrande, Idaho.