Mountain Home, Idaho · field elev 3,167 ft
Density Altitude at Mountain Home Municipal (U76)
From a field elevation of 3,167 ft, a typical July afternoon at Mountain Home Municipal (95 °F) raises density altitude to about 6,133 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 | 31.7 | 2,111 ft | 40.0 | 2,673 ft |
| February | 36.2 | 2,417 ft | 46.6 | 3,113 ft |
| March | 43.0 | 2,874 ft | 55.7 | 3,707 ft |
| April | 49.4 | 3,297 ft | 62.8 | 4,162 ft |
| May | 59.1 | 3,926 ft | 73.7 | 4,845 ft |
| June | 68.0 | 4,490 ft | 84.1 | 5,482 ft ▲ |
| July | 77.3 | 5,067 ft | 95.0 | 6,133 ft ▲ |
| August | 75.4 | 4,950 ft | 93.2 | 6,026 ft ▲ |
| September | 64.9 | 4,295 ft | 81.9 | 5,348 ft ▲ |
| October | 51.9 | 3,461 ft | 67.1 | 4,434 ft |
| November | 39.3 | 2,626 ft | 50.1 | 3,343 ft |
| December | 31.2 | 2,076 ft | 39.1 | 2,613 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 U76
DENSITY ALTITUDE caution
Field elevation 3,167 ft — the air behaves like 6,133 ft.
- PRESSURE ALT
- 3,169 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
- U89 — Glenns Ferry Municipal
Glenns Ferry · elev 2,536 ft
- 2U0 — Smith Prairie
Prairie · elev 4,958 ft
- 1U9 — Pine
Pine · elev 4,232 ft
- KBOI — Boise Air Trml/Gowen Field
Boise · elev 2,872 ft
- 1U3 — Murphy
Murphy · elev 2,855 ft
- U98 — Idaho City Usfs
Idaho City · elev 3,920 ft
- U86 — Fairfield/Frostenson Airfield
Fairfield · elev 5,058 ft
- KMAN — Nampa Municipal
Nampa · elev 2,537 ft
Frequently asked questions
How high does density altitude get at U76 in summer?
On a typical July afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Mountain Home Municipal reaches roughly 6,133 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 U76 on an average day?
It swings with the seasons: from roughly 2,076 ft at the coldest month's average temperature to about 5,067 ft at the warmest month's — all from a constant field elevation of 3,167 ft. The month-by-month table above carries the full year.
What is the field elevation of Mountain Home Municipal?
3,167 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U76 (FAA), in Mountain Home, Idaho.