Eastport, Michigan · field elev 640 ft
Density Altitude at Torchport (59M)
Torchport sits at 640 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 2,144 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 | 23.0 | −1,656 ft | 29.5 | −1,195 ft |
| February | 23.4 | −1,628 ft | 30.8 | −1,103 ft |
| March | 31.4 | −1,061 ft | 40.6 | −424 ft |
| April | 41.8 | −342 ft | 52.3 | 366 ft |
| May | 54.1 | 485 ft | 65.6 | 1,237 ft |
| June | 63.9 | 1,127 ft | 75.5 | 1,868 ft |
| July | 68.8 | 1,443 ft | 79.9 | 2,144 ft |
| August | 68.3 | 1,411 ft | 78.6 | 2,063 ft |
| September | 61.2 | 952 ft | 71.4 | 1,609 ft |
| October | 49.5 | 179 ft | 57.8 | 729 ft |
| November | 39.3 | −513 ft | 46.1 | −50 ft |
| December | 29.9 | −1,167 ft | 35.2 | −796 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 59M
DENSITY ALTITUDE
Field elevation 640 ft — the air behaves like 2,150 ft.
- PRESSURE ALT
- 641 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
- KACB — Antrim County
Bellaire · elev 623 ft
- 5D5 — Woolsey Meml
Northport · elev 628 ft
- Y94 — East Jordan City
East Jordan · elev 641 ft
- D90 — Mancelona Municipal
Mancelona · elev 1,133 ft
- KCVX — Charlevoix Municipal
Charlevoix · elev 669 ft
- N98 — Boyne City Municipal
Boyne City · elev 660 ft
- KBFA — Boyne Mountain
Boyne Falls · elev 719 ft
- Y89 — Kalkaska City
Kalkaska · elev 1,029 ft
Frequently asked questions
How high does density altitude get at 59M in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Torchport reaches roughly 2,144 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 59M on an average day?
It swings with the seasons: from roughly −1,656 ft at the coldest month's average temperature to about 1,443 ft at the warmest month's — all from a constant field elevation of 640 ft. The month-by-month table above carries the full year.
What is the field elevation of Torchport?
640 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 59M (FAA), in Eastport, Michigan.