Iron River, Michigan · field elev 1,618 ft
Density Altitude at Stambaugh (Y73)
Stambaugh sits at 1,618 ft, and even a typical July afternoon (77 °F) only lifts density altitude to about 3,159 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 10.7 | −1,317 ft | 21.2 | −558 ft |
| February | 12.8 | −1,164 ft | 25.5 | −253 ft |
| March | 23.1 | −423 ft | 36.8 | 533 ft |
| April | 36.9 | 539 ft | 49.7 | 1,403 ft |
| May | 50.6 | 1,463 ft | 64.1 | 2,343 ft |
| June | 60.1 | 2,085 ft | 73.3 | 2,927 ft |
| July | 63.7 | 2,317 ft | 77.0 | 3,159 ft |
| August | 61.5 | 2,176 ft | 75.0 | 3,034 ft |
| September | 54.0 | 1,687 ft | 67.3 | 2,548 ft |
| October | 41.8 | 873 ft | 53.2 | 1,635 ft |
| November | 29.2 | 7 ft | 37.9 | 608 ft |
| December | 17.4 | −830 ft | 26.3 | −197 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 Y73
DENSITY ALTITUDE
Field elevation 1,618 ft — the air behaves like 3,159 ft.
- PRESSURE ALT
- 1,619 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 Michigan fields
- 50D — Iron County
Crystal Falls · elev 1,340 ft
- 6Y9 — Prickett-Grooms Field
Sidnaw · elev 1,377 ft
- KIMT — Ford
Iron Mountain Kingsford · elev 1,182 ft
- M61 — Edward F Johnson
Ishpeming · elev 1,446 ft
- KSAW — Marquette/Sawyer Regional
Marquette · elev 1,205 ft
- KOGM — Ontonagon County/Schuster Field
Ontonagon · elev 665 ft
- 6Y4 — Van Effen Field
Rock · elev 970 ft
- KCMX — Houghton County Meml
Hancock · elev 1,095 ft
Frequently asked questions
How high does density altitude get at Y73 in summer?
On a typical July afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Stambaugh reaches roughly 3,159 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 Y73 on an average day?
It swings with the seasons: from roughly −1,317 ft at the coldest month's average temperature to about 2,317 ft at the warmest month's — all from a constant field elevation of 1,618 ft. The month-by-month table above carries the full year.
What is the field elevation of Stambaugh?
1,618 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Y73 (FAA), in Iron River, Michigan.