Bernard, Idaho · field elev 3,626 ft
Density Altitude at Bernard Usfs (U54)
From a field elevation of 3,626 ft, a typical July afternoon at Bernard Usfs (88 °F) raises density altitude to about 6,291 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 | 23.6 | 2,123 ft | 30.9 | 2,627 ft |
| February | 28.9 | 2,490 ft | 38.4 | 3,135 ft |
| March | 38.2 | 3,122 ft | 49.8 | 3,889 ft |
| April | 45.8 | 3,627 ft | 58.7 | 4,464 ft |
| May | 53.9 | 4,156 ft | 68.1 | 5,058 ft ▲ |
| June | 60.9 | 4,604 ft | 76.4 | 5,571 ft ▲ |
| July | 69.7 | 5,158 ft | 88.3 | 6,291 ft ▲ |
| August | 68.4 | 5,077 ft | 87.2 | 6,225 ft ▲ |
| September | 58.7 | 4,464 ft | 75.9 | 5,541 ft ▲ |
| October | 45.5 | 3,607 ft | 58.0 | 4,419 ft |
| November | 32.7 | 2,750 ft | 40.6 | 3,282 ft |
| December | 23.5 | 2,116 ft | 30.2 | 2,579 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 U54
DENSITY ALTITUDE caution
Field elevation 3,626 ft — the air behaves like 6,273 ft.
- PRESSURE ALT
- 3,628 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
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- AIR DENSITY INDEX
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- AIR DENSITY
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- 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
- 85U — Soldier Bar Usfs
Soldier Bar · elev 4,190 ft
- 4D2 — Hoodoo Meadows
Salmon · elev 8,262 ft
- C53 — Lower Loon Creek
Challis · elev 4,200 ft
- I08 — Cabin Creek Usfs
Big Creek Ranger Station · elev 4,289 ft
- 0U3 — Mahoney Creek Usfs
Mahoney Creek · elev 4,618 ft
- D47 — Cougar Ranch
Challis · elev 4,277 ft
- ID8 — Marble Creek
Challis · elev 4,685 ft
- 2U8 — Thomas Creek
Stanley · elev 4,415 ft
Frequently asked questions
How high does density altitude get at U54 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Bernard Usfs reaches roughly 6,291 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 U54 on an average day?
It swings with the seasons: from roughly 2,116 ft at the coldest month's average temperature to about 5,158 ft at the warmest month's — all from a constant field elevation of 3,626 ft. The month-by-month table above carries the full year.
What is the field elevation of Bernard Usfs?
3,626 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U54 (FAA), in Bernard, Idaho.