Atlanta, Idaho · field elev 4,503 ft
Density Altitude at Weatherby Usfs (52U)
From a field elevation of 4,503 ft, a typical July afternoon at Weatherby Usfs (87 °F) raises density altitude to about 7,264 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 | 24.8 | 3,300 ft | 33.6 | 3,900 ft |
| February | 28.9 | 3,581 ft | 40.2 | 4,341 ft |
| March | 36.9 | 4,121 ft | 48.7 | 4,899 ft |
| April | 43.3 | 4,546 ft | 56.4 | 5,394 ft ▲ |
| May | 51.5 | 5,080 ft | 67.9 | 6,117 ft ▲ |
| June | 58.9 | 5,553 ft | 77.1 | 6,682 ft ▲ |
| July | 65.7 | 5,980 ft | 86.8 | 7,264 ft ▲ |
| August | 63.7 | 5,855 ft | 85.5 | 7,187 ft ▲ |
| September | 56.2 | 5,381 ft | 75.5 | 6,584 ft ▲ |
| October | 44.3 | 4,611 ft | 61.0 | 5,685 ft ▲ |
| November | 32.4 | 3,819 ft | 42.6 | 4,499 ft |
| December | 24.7 | 3,293 ft | 33.2 | 3,873 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 52U
DENSITY ALTITUDE caution
Field elevation 4,503 ft — the air behaves like 7,276 ft.
- PRESSURE ALT
- 4,505 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
- U45 — Graham Usfs
Atlanta · elev 5,726 ft
- 55H — Atlanta
Atlanta · elev 5,500 ft
- 0U1 — Warm Springs Creek
Lowman · elev 4,831 ft
- 1U9 — Pine
Pine · elev 4,232 ft
- 2U0 — Smith Prairie
Prairie · elev 4,958 ft
- U98 — Idaho City Usfs
Idaho City · elev 3,920 ft
- U87 — Smiley Creek
Smiley Creek · elev 7,206 ft
- 2U7 — Stanley
Stanley · elev 6,403 ft
Frequently asked questions
How high does density altitude get at 52U in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Weatherby Usfs reaches roughly 7,264 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 52U on an average day?
It swings with the seasons: from roughly 3,293 ft at the coldest month's average temperature to about 5,980 ft at the warmest month's — all from a constant field elevation of 4,503 ft. The month-by-month table above carries the full year.
What is the field elevation of Weatherby Usfs?
4,503 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 52U (FAA), in Atlanta, Idaho.