Boyne Falls, Michigan · field elev 719 ft
Density Altitude at Boyne Mountain (KBFA)
Boyne Mountain sits at 719 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,464 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 | 21.2 | −1,686 ft | 28.4 | −1,174 ft |
| February | 22.5 | −1,593 ft | 31.5 | −956 ft |
| March | 31.5 | −956 ft | 42.4 | −203 ft |
| April | 43.6 | −121 ft | 55.8 | 695 ft |
| May | 56.7 | 755 ft | 70.2 | 1,629 ft |
| June | 66.5 | 1,392 ft | 79.7 | 2,228 ft |
| July | 70.8 | 1,667 ft | 83.5 | 2,464 ft |
| August | 69.4 | 1,578 ft | 81.7 | 2,353 ft |
| September | 62.1 | 1,108 ft | 73.8 | 1,858 ft |
| October | 49.6 | 283 ft | 59.3 | 925 ft |
| November | 37.5 | −539 ft | 44.6 | −53 ft |
| December | 27.4 | −1,244 ft | 33.4 | −823 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 KBFA
DENSITY ALTITUDE
Field elevation 719 ft — the air behaves like 2,495 ft.
- PRESSURE ALT
- 720 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
- N98 — Boyne City Municipal
Boyne City · elev 660 ft
- Y94 — East Jordan City
East Jordan · elev 641 ft
- KGLR — Gaylord Regional
Gaylord · elev 1,328 ft
- 4Y4 — Lakes Of The North
Gaylord · elev 1,287 ft
- KMGN — Harbor Springs
Harbor Springs · elev 686 ft
- KACB — Antrim County
Bellaire · elev 623 ft
- D90 — Mancelona Municipal
Mancelona · elev 1,133 ft
- KCVX — Charlevoix Municipal
Charlevoix · elev 669 ft
Frequently asked questions
How high does density altitude get at KBFA in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Boyne Mountain reaches roughly 2,464 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 KBFA on an average day?
It swings with the seasons: from roughly −1,686 ft at the coldest month's average temperature to about 1,667 ft at the warmest month's — all from a constant field elevation of 719 ft. The month-by-month table above carries the full year.
What is the field elevation of Boyne Mountain?
719 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBFA (ICAO) / BFA (FAA), in Boyne Falls, Michigan.