Blackfoot, Idaho · field elev 4,492 ft
Density Altitude at Mccarley Field (U02)
From a field elevation of 4,492 ft, a typical July afternoon at Mccarley Field (87 °F) raises density altitude to about 7,257 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 | 24.0 | 3,231 ft | 31.2 | 3,724 ft |
| February | 28.8 | 3,561 ft | 37.0 | 4,114 ft |
| March | 39.0 | 4,248 ft | 48.8 | 4,891 ft |
| April | 46.1 | 4,716 ft | 57.4 | 5,444 ft ▲ |
| May | 55.2 | 5,304 ft | 67.6 | 6,085 ft ▲ |
| June | 63.2 | 5,810 ft | 76.7 | 6,644 ft ▲ |
| July | 71.4 | 6,320 ft | 86.9 | 7,257 ft ▲ |
| August | 70.1 | 6,240 ft | 85.9 | 7,197 ft ▲ |
| September | 60.6 | 5,647 ft | 75.1 | 6,546 ft ▲ |
| October | 47.8 | 4,826 ft | 60.5 | 5,640 ft ▲ |
| November | 35.1 | 3,987 ft | 44.8 | 4,631 ft |
| December | 24.8 | 3,286 ft | 32.1 | 3,785 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 U02
DENSITY ALTITUDE caution
Field elevation 4,492 ft — the air behaves like 7,263 ft.
- PRESSURE ALT
- 4,494 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
- 2U4 — Rockford Municipal
Rockford · elev 4,465 ft
- KPIH — Pocatello Regional
Pocatello · elev 4,452 ft
- KIDA — Idaho Falls Regional
Idaho Falls · elev 4,744 ft
- U37 — Midway
Atomic City · elev 5,017 ft
- U36 — Aberdeen Municipal
Aberdeen · elev 4,474 ft
- U56 — Rigby
Rigby · elev 4,845 ft
- U01 — Savage Field
American Falls · elev 4,420 ft
- U46 — Big Southern Butte
Atomic City · elev 5,073 ft
Frequently asked questions
How high does density altitude get at U02 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Mccarley Field reaches roughly 7,257 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 U02 on an average day?
It swings with the seasons: from roughly 3,231 ft at the coldest month's average temperature to about 6,320 ft at the warmest month's — all from a constant field elevation of 4,492 ft. The month-by-month table above carries the full year.
What is the field elevation of Mccarley Field?
4,492 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U02 (FAA), in Blackfoot, Idaho.