Soda Springs, Idaho · field elev 5,843 ft
Density Altitude at Allen H Tigert (U78)
Allen H Tigert is a genuine high-and-hot field: from 5,843 ft of elevation, a typical July afternoon (87 °F) pushes density altitude to about 8,885 ft — the airplane performs like it is 3,042 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 | 21.2 | 4,721 ft | 32.3 | 5,473 ft ▲ |
| February | 23.5 | 4,879 ft | 35.1 | 5,660 ft ▲ |
| March | 31.7 | 5,433 ft | 44.1 | 6,250 ft ▲ |
| April | 41.1 | 6,055 ft | 55.3 | 6,967 ft ▲ |
| May | 50.1 | 6,637 ft | 65.8 | 7,622 ft ▲ |
| June | 58.0 | 7,137 ft | 76.0 | 8,243 ft ⚠ |
| July | 66.0 | 7,635 ft | 86.8 | 8,885 ft ⚠ |
| August | 64.8 | 7,561 ft | 85.4 | 8,803 ft ⚠ |
| September | 55.1 | 6,955 ft | 74.4 | 8,147 ft ⚠ |
| October | 43.5 | 6,211 ft | 59.8 | 7,250 ft ▲ |
| November | 32.1 | 5,460 ft | 44.8 | 6,296 ft ▲ |
| December | 21.7 | 4,755 ft | 33.3 | 5,540 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 U78
DENSITY ALTITUDE high DA
Field elevation 5,843 ft — the air behaves like 8,897 ft.
- PRESSURE ALT
- 5,845 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
- U51 — Bancroft Municipal
Bancroft · elev 5,435 ft
- 0ID — W E Ranch
Thatcher · elev 5,075 ft
- 1U7 — Bear Lake County
Paris · elev 5,933 ft
- U58 — Downey/Hyde Meml/
Downey · elev 4,919 ft
- U10 — Preston
Preston · elev 4,728 ft
- KMLD — Malad City
Malad City · elev 4,503 ft
- KPIH — Pocatello Regional
Pocatello · elev 4,452 ft
- U02 — Mccarley Field
Blackfoot · elev 4,492 ft
Frequently asked questions
How high does density altitude get at U78 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Allen H Tigert reaches roughly 8,885 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 U78 on an average day?
It swings with the seasons: from roughly 4,721 ft at the coldest month's average temperature to about 7,635 ft at the warmest month's — all from a constant field elevation of 5,843 ft. The month-by-month table above carries the full year.
What is the field elevation of Allen H Tigert?
5,843 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U78 (FAA), in Soda Springs, Idaho.