Carey, Idaho · field elev 4,789 ft
Density Altitude at Carey (U65)
From a field elevation of 4,789 ft, a typical July afternoon at Carey (87 °F) raises density altitude to about 7,610 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 | 19.4 | 3,282 ft | 31.8 | 4,133 ft |
| February | 23.3 | 3,553 ft | 36.4 | 4,442 ft |
| March | 32.9 | 4,207 ft | 46.5 | 5,108 ft ▲ |
| April | 41.2 | 4,760 ft | 57.1 | 5,789 ft ▲ |
| May | 50.6 | 5,373 ft | 67.1 | 6,417 ft ▲ |
| June | 57.6 | 5,821 ft | 76.1 | 6,969 ft ▲ |
| July | 66.5 | 6,379 ft | 86.8 | 7,610 ft ▲ |
| August | 65.2 | 6,298 ft | 85.5 | 7,533 ft ▲ |
| September | 56.5 | 5,751 ft | 75.6 | 6,938 ft ▲ |
| October | 44.0 | 4,945 ft | 60.6 | 6,011 ft ▲ |
| November | 31.3 | 4,099 ft | 44.5 | 4,977 ft |
| December | 20.8 | 3,380 ft | 32.3 | 4,167 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 U65
DENSITY ALTITUDE caution
Field elevation 4,789 ft — the air behaves like 7,622 ft.
- PRESSURE ALT
- 4,791 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- 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
- 0U7 — Hollow Top
Carey · elev 5,359 ft
- U99 — Laidlaw Corrals
Kimama · elev 4,448 ft
- KSUN — Friedman Meml
Hailey · elev 5,320 ft
- U93 — Magic Reservoir
Hailey · elev 4,844 ft
- U92 — Antelope Valley
Moore · elev 6,193 ft
- 0U2 — Copper Basin
Mackay · elev 7,920 ft
- U48 — Coxs Well
Atomic City · elev 5,048 ft
- KAOC — Arco-Butte County
Arco · elev 5,335 ft
Frequently asked questions
How high does density altitude get at U65 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Carey reaches roughly 7,610 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 U65 on an average day?
It swings with the seasons: from roughly 3,282 ft at the coldest month's average temperature to about 6,379 ft at the warmest month's — all from a constant field elevation of 4,789 ft. The month-by-month table above carries the full year.
What is the field elevation of Carey?
4,789 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U65 (FAA), in Carey, Idaho.