Warren, Idaho · field elev 5,902 ft
Density Altitude at Warren /Usfs/ (3U1)
Warren /Usfs/ is a genuine high-and-hot field: from 5,902 ft of elevation, a typical July afternoon (79 °F) pushes density altitude to about 8,506 ft — the airplane performs like it is 2,604 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 | 21.1 | 4,788 ft | 35.0 | 5,726 ft ▲ |
| February | 24.0 | 4,986 ft | 40.8 | 6,108 ft ▲ |
| March | 31.5 | 5,493 ft | 45.7 | 6,427 ft ▲ |
| April | 35.1 | 5,733 ft | 49.8 | 6,690 ft ▲ |
| May | 43.3 | 6,271 ft | 59.3 | 7,291 ft ▲ |
| June | 51.1 | 6,773 ft | 68.1 | 7,835 ft ▲ |
| July | 58.0 | 7,209 ft | 79.2 | 8,506 ft ⚠ |
| August | 56.9 | 7,140 ft | 78.9 | 8,489 ft ⚠ |
| September | 49.4 | 6,665 ft | 69.2 | 7,903 ft ▲ |
| October | 39.4 | 6,016 ft | 56.0 | 7,084 ft ▲ |
| November | 28.7 | 5,305 ft | 41.2 | 6,134 ft ▲ |
| December | 21.6 | 4,822 ft | 34.1 | 5,666 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 3U1
DENSITY ALTITUDE high DA
Field elevation 5,902 ft — the air behaves like 8,495 ft.
- PRESSURE ALT
- 5,904 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
- C48 — Wilson Bar Usfs
Dixie · elev 2,275 ft
- A05 — Dixie Usfs
Dixie · elev 5,148 ft
- U60 — Big Creek
Big Creek · elev 5,743 ft
- 24K — Krassel Usfs
Mc Call · elev 3,982 ft
- U79 — Chamberlain Usfs
Chamberlain Guard Station · elev 5,765 ft
- I92 — Reed Ranch
Yellow Pine · elev 4,157 ft
- 3U2 — Johnson Creek
Yellow Pine · elev 4,960 ft
- 75C — Orogrande
Orogrande · elev 4,419 ft
Frequently asked questions
How high does density altitude get at 3U1 in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Warren /Usfs/ reaches roughly 8,506 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 3U1 on an average day?
It swings with the seasons: from roughly 4,788 ft at the coldest month's average temperature to about 7,209 ft at the warmest month's — all from a constant field elevation of 5,902 ft. The month-by-month table above carries the full year.
What is the field elevation of Warren /Usfs/?
5,902 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3U1 (FAA), in Warren, Idaho.