Three Creek, Idaho · field elev 5,829 ft
Density Altitude at Murphy Hot Springs (3U0)
Murphy Hot Springs is a genuine high-and-hot field: from 5,829 ft of elevation, a typical July afternoon (82 °F) pushes density altitude to about 8,608 ft — the airplane performs like it is 2,779 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 | 27.7 | 5,147 ft | 37.6 | 5,808 ft ▲ |
| February | 28.0 | 5,167 ft | 37.6 | 5,808 ft ▲ |
| March | 33.8 | 5,556 ft | 44.2 | 6,240 ft ▲ |
| April | 39.1 | 5,907 ft | 51.1 | 6,684 ft ▲ |
| May | 47.7 | 6,466 ft | 61.3 | 7,326 ft ▲ |
| June | 55.5 | 6,963 ft | 71.4 | 7,948 ft ▲ |
| July | 64.9 | 7,550 ft | 82.4 | 8,608 ft ⚠ |
| August | 63.6 | 7,469 ft | 81.2 | 8,537 ft ⚠ |
| September | 54.7 | 6,912 ft | 71.4 | 7,948 ft ▲ |
| October | 43.5 | 6,194 ft | 57.6 | 7,095 ft ▲ |
| November | 32.7 | 5,483 ft | 43.3 | 6,181 ft ▲ |
| December | 25.9 | 5,025 ft | 35.5 | 5,669 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 3U0
DENSITY ALTITUDE high DA
Field elevation 5,829 ft — the air behaves like 8,585 ft.
- PRESSURE ALT
- 5,831 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
- U91 — Grasmere
Grasmere · elev 5,144 ft
- U03 — Buhl Municipal
Buhl · elev 3,663 ft
- KTWF — Joslin Field/Magic Valley Regional
Twin Falls · elev 4,153 ft
- U89 — Glenns Ferry Municipal
Glenns Ferry · elev 2,536 ft
- KJER — Jerome County
Jerome · elev 4,053 ft
- KGNG — Gooding Municipal
Gooding · elev 3,732 ft
- U94 — Hazelton Municipal
Hazelton · elev 4,172 ft
- 1U6 — Oakley Municipal
Oakley · elev 4,664 ft
Frequently asked questions
How high does density altitude get at 3U0 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Murphy Hot Springs reaches roughly 8,608 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 3U0 on an average day?
It swings with the seasons: from roughly 5,025 ft at the coldest month's average temperature to about 7,550 ft at the warmest month's — all from a constant field elevation of 5,829 ft. The month-by-month table above carries the full year.
What is the field elevation of Murphy Hot Springs?
5,829 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3U0 (FAA), in Three Creek, Idaho.