Cayuse Creek, Idaho · field elev 3,505 ft
Density Altitude at Cayuse Creek Usfs (C64)
From a field elevation of 3,505 ft, a typical July afternoon at Cayuse Creek Usfs (83 °F) raises density altitude to about 5,796 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 | 25.0 | 2,070 ft | 32.0 | 2,552 ft |
| February | 27.5 | 2,243 ft | 36.7 | 2,871 ft |
| March | 34.6 | 2,729 ft | 45.5 | 3,458 ft |
| April | 41.1 | 3,166 ft | 53.2 | 3,961 ft |
| May | 49.5 | 3,721 ft | 63.6 | 4,627 ft |
| June | 56.8 | 4,194 ft | 71.4 | 5,115 ft ▲ |
| July | 64.2 | 4,665 ft | 82.5 | 5,796 ft ▲ |
| August | 62.8 | 4,576 ft | 82.1 | 5,771 ft ▲ |
| September | 53.8 | 4,000 ft | 70.6 | 5,066 ft ▲ |
| October | 41.8 | 3,212 ft | 53.5 | 3,981 ft |
| November | 30.9 | 2,476 ft | 37.5 | 2,924 ft |
| December | 23.9 | 1,993 ft | 30.0 | 2,415 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 C64
DENSITY ALTITUDE caution
Field elevation 3,505 ft — the air behaves like 5,826 ft.
- PRESSURE ALT
- 3,507 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
- S92 — Fish Lake Usfs
Fish Lake · elev 5,646 ft
- 1U1 — Moose Creek /Usfs/
Moose Creek Ranger Station · elev 2,454 ft
- 2U5 — Shearer /Usfs/
Shearer · elev 2,634 ft
- S73 — Kamiah Municipal
Kamiah · elev 1,206 ft
- S82 — Kooskia Municipal
Kooskia · elev 1,263 ft
- S68 — Orofino Municipal
Orofino · elev 1,005 ft
- S90 — Elk City
Elk City · elev 4,097 ft
- 0S5 — Nezperce Municipal
Nezperce · elev 3,204 ft
Frequently asked questions
How high does density altitude get at C64 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Cayuse Creek Usfs reaches roughly 5,796 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 C64 on an average day?
It swings with the seasons: from roughly 1,993 ft at the coldest month's average temperature to about 4,665 ft at the warmest month's — all from a constant field elevation of 3,505 ft. The month-by-month table above carries the full year.
What is the field elevation of Cayuse Creek Usfs?
3,505 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is C64 (FAA), in Cayuse Creek, Idaho.