Big Timber, Montana · field elev 4,494 ft
Density Altitude at Big Timber At Howard Field (6S0)
From a field elevation of 4,494 ft, a typical July afternoon at Big Timber At Howard Field (86 °F) raises density altitude to about 7,217 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 | 28.8 | 3,563 ft | 38.1 | 4,190 ft |
| February | 29.8 | 3,631 ft | 40.0 | 4,316 ft |
| March | 37.7 | 4,163 ft | 49.3 | 4,926 ft |
| April | 44.6 | 4,620 ft | 56.8 | 5,408 ft ▲ |
| May | 53.4 | 5,191 ft | 66.6 | 6,025 ft ▲ |
| June | 61.9 | 5,731 ft | 75.8 | 6,592 ft ▲ |
| July | 69.8 | 6,224 ft | 86.2 | 7,217 ft ▲ |
| August | 68.1 | 6,118 ft | 84.9 | 7,140 ft ▲ |
| September | 58.8 | 5,535 ft | 74.1 | 6,488 ft ▲ |
| October | 46.7 | 4,757 ft | 59.0 | 5,548 ft ▲ |
| November | 35.9 | 4,043 ft | 45.9 | 4,705 ft |
| December | 28.4 | 3,536 ft | 37.2 | 4,130 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 6S0
DENSITY ALTITUDE caution
Field elevation 4,494 ft — the air behaves like 7,206 ft.
- PRESSURE ALT
- 4,496 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
- KLVM — Mission Field
Livingston · elev 4,659 ft
- 6S3 — Woltermann Meml
Columbus · elev 3,578 ft
- 9U1 — Wilsall
Wilsall · elev 5,140 ft
- KHWQ — Wheatland County At Harlowton
Harlowton · elev 4,312 ft
- 8U0 — Ryegate
Ryegate · elev 3,689 ft
- KRED — Red Lodge
Red Lodge · elev 5,762 ft
- KBZN — Bozeman Yellowstone International
Bozeman · elev 4,473 ft
- 6S8 — Laurel Municipal
Laurel · elev 3,543 ft
Frequently asked questions
How high does density altitude get at 6S0 in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Big Timber At Howard Field reaches roughly 7,217 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 6S0 on an average day?
It swings with the seasons: from roughly 3,536 ft at the coldest month's average temperature to about 6,224 ft at the warmest month's — all from a constant field elevation of 4,494 ft. The month-by-month table above carries the full year.
What is the field elevation of Big Timber At Howard Field?
4,494 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6S0 (FAA), in Big Timber, Montana.