Wisdom, Montana · field elev 6,133 ft
Density Altitude at Wisdom (7S4)
Wisdom is a genuine high-and-hot field: from 6,133 ft of elevation, a typical July afternoon (78 °F) pushes density altitude to about 8,721 ft — the airplane performs like it is 2,588 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 | 14.7 | 4,633 ft | 26.3 | 5,429 ft ▲ |
| February | 16.2 | 4,737 ft | 29.5 | 5,645 ft ▲ |
| March | 25.6 | 5,382 ft | 38.9 | 6,269 ft ▲ |
| April | 34.9 | 6,005 ft | 48.8 | 6,910 ft ▲ |
| May | 43.8 | 6,588 ft | 59.2 | 7,567 ft ▲ |
| June | 51.4 | 7,076 ft | 67.4 | 8,074 ft ⚠ |
| July | 57.8 | 7,480 ft | 78.1 | 8,721 ft ⚠ |
| August | 55.6 | 7,341 ft | 77.3 | 8,673 ft ⚠ |
| September | 47.8 | 6,846 ft | 67.8 | 8,098 ft ⚠ |
| October | 37.0 | 6,144 ft | 53.1 | 7,184 ft ▲ |
| November | 23.2 | 5,219 ft | 35.9 | 6,071 ft ▲ |
| December | 14.1 | 4,591 ft | 25.3 | 5,362 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 7S4
DENSITY ALTITUDE high DA
Field elevation 6,133 ft — the air behaves like 8,715 ft.
- PRESSURE ALT
- 6,135 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 Montana fields
- 02T — Wise River
Wise River · elev 5,830 ft
- 4U7 — West Fork Lodge
Conner · elev 4,249 ft
- 3U3 — Bowman Field
Anaconda · elev 5,034 ft
- KDLN — Dillon
Dillon · elev 5,245 ft
- U05 — Riddick Field
Philipsburg · elev 5,219 ft
- KBTM — Bert Mooney
Butte · elev 5,551 ft
- KRVF — Ruby Valley Field
Twin Bridges · elev 4,789 ft
- KHRF — Ravalli County
Hamilton · elev 3,636 ft
Frequently asked questions
How high does density altitude get at 7S4 in summer?
On a typical July afternoon — around 78 °F at the nearest NOAA normals station — density altitude at Wisdom reaches roughly 8,721 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 7S4 on an average day?
It swings with the seasons: from roughly 4,591 ft at the coldest month's average temperature to about 7,480 ft at the warmest month's — all from a constant field elevation of 6,133 ft. The month-by-month table above carries the full year.
What is the field elevation of Wisdom?
6,133 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 7S4 (FAA), in Wisdom, Montana.