Ashland, Montana · field elev 3,300 ft
Density Altitude at Stevens Ranch (1M6)
From a field elevation of 3,300 ft, a typical July afternoon at Stevens Ranch (89 °F) raises density altitude to about 5,908 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 | 23.1 | 1,681 ft | 34.7 | 2,481 ft |
| February | 26.3 | 1,904 ft | 38.4 | 2,731 ft |
| March | 36.4 | 2,596 ft | 49.9 | 3,494 ft |
| April | 44.9 | 3,165 ft | 58.6 | 4,057 ft |
| May | 54.2 | 3,774 ft | 68.0 | 4,653 ft |
| June | 64.0 | 4,401 ft | 78.5 | 5,303 ft ▲ |
| July | 71.9 | 4,896 ft | 88.5 | 5,908 ft ▲ |
| August | 70.1 | 4,784 ft | 87.3 | 5,836 ft ▲ |
| September | 60.0 | 4,147 ft | 76.6 | 5,186 ft ▲ |
| October | 46.4 | 3,264 ft | 60.5 | 4,179 ft |
| November | 33.6 | 2,406 ft | 45.7 | 3,218 ft |
| December | 24.1 | 1,751 ft | 35.4 | 2,528 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 1M6
DENSITY ALTITUDE caution
Field elevation 3,300 ft — the air behaves like 5,937 ft.
- PRESSURE ALT
- 3,302 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
- 3U4 — St Labre Mission
Ashland · elev 2,909 ft
- 00F — Broadus
Broadus · elev 3,282 ft
- M46 — Colstrip
Colstrip · elev 3,428 ft
- 1S3 — Tillitt Field
Forsyth · elev 2,729 ft
- KMLS — Frank Wiley Field
Miles City · elev 2,634 ft
- 00U — Big Horn County
Hardin · elev 3,025 ft
- 6U7 — Hysham
Hysham · elev 2,624 ft
- 5U7 — Fort Smith Landing Strip
Fort Smith · elev 3,242 ft
Frequently asked questions
How high does density altitude get at 1M6 in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Stevens Ranch reaches roughly 5,908 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 1M6 on an average day?
It swings with the seasons: from roughly 1,681 ft at the coldest month's average temperature to about 4,896 ft at the warmest month's — all from a constant field elevation of 3,300 ft. The month-by-month table above carries the full year.
What is the field elevation of Stevens Ranch?
3,300 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1M6 (FAA), in Ashland, Montana.