Mackay, Idaho · field elev 5,892 ft
Density Altitude at Mackay (U62)
Mackay is a genuine high-and-hot field: from 5,892 ft of elevation, a typical July afternoon (83 °F) pushes density altitude to about 8,738 ft — the airplane performs like it is 2,846 ft above the field before the wheels roll.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 19.0 | 4,630 ft | 29.6 | 5,353 ft ▲ |
| February | 23.3 | 4,926 ft | 34.4 | 5,674 ft ▲ |
| March | 32.9 | 5,574 ft | 43.9 | 6,298 ft ▲ |
| April | 41.8 | 6,161 ft | 54.5 | 6,977 ft ▲ |
| May | 50.8 | 6,742 ft | 64.6 | 7,608 ft ▲ |
| June | 58.0 | 7,197 ft | 72.7 | 8,103 ft ⚠ |
| July | 66.6 | 7,731 ft | 83.3 | 8,738 ft ⚠ |
| August | 64.7 | 7,614 ft | 81.5 | 8,631 ft ⚠ |
| September | 56.3 | 7,090 ft | 72.1 | 8,067 ft ⚠ |
| October | 44.2 | 6,317 ft | 57.8 | 7,185 ft ▲ |
| November | 30.2 | 5,393 ft | 41.1 | 6,115 ft ▲ |
| December | 19.2 | 4,644 ft | 29.0 | 5,313 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 U62
DENSITY ALTITUDE high DA
Field elevation 5,892 ft — the air behaves like 8,720 ft.
- PRESSURE ALT
- 5,894 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
- 0U2 — Copper Basin
Mackay · elev 7,920 ft
- U92 — Antelope Valley
Moore · elev 6,193 ft
- KAOC — Arco-Butte County
Arco · elev 5,335 ft
- U61 — Twin Bridges
Ketchum · elev 6,900 ft
- U97 — Howe
Howe · elev 4,930 ft
- 0U7 — Hollow Top
Carey · elev 5,359 ft
- U46 — Big Southern Butte
Atomic City · elev 5,073 ft
- KSUN — Friedman Meml
Hailey · elev 5,320 ft
Frequently asked questions
How high does density altitude get at U62 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Mackay reaches roughly 8,738 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 U62 on an average day?
It swings with the seasons: from roughly 4,630 ft at the coldest month's average temperature to about 7,731 ft at the warmest month's — all from a constant field elevation of 5,892 ft. The month-by-month table above carries the full year.
What is the field elevation of Mackay?
5,892 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U62 (FAA), in Mackay, Idaho.