Harbor Springs, Michigan · field elev 686 ft
Density Altitude at Harbor Springs (KMGN)
Harbor Springs sits at 686 ft, and even a typical July afternoon (76 °F) only lifts density altitude to about 1,975 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 | 19.1 | −1,879 ft | 26.1 | −1,378 ft |
| February | 19.6 | −1,843 ft | 27.7 | −1,264 ft |
| March | 27.5 | −1,278 ft | 37.0 | −614 ft |
| April | 39.8 | −422 ft | 49.6 | 243 ft |
| May | 52.3 | 423 ft | 62.8 | 1,113 ft |
| June | 62.2 | 1,074 ft | 72.6 | 1,741 ft |
| July | 66.7 | 1,364 ft | 76.3 | 1,975 ft |
| August | 65.7 | 1,300 ft | 75.7 | 1,937 ft |
| September | 59.4 | 891 ft | 69.3 | 1,531 ft |
| October | 47.4 | 95 ft | 55.9 | 661 ft |
| November | 36.3 | −663 ft | 42.6 | −230 ft |
| December | 26.6 | −1,342 ft | 32.0 | −962 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 KMGN
DENSITY ALTITUDE
Field elevation 686 ft — the air behaves like 1,956 ft.
- PRESSURE ALT
- 687 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
- KPLN — Pellston Regional/Emmet County
Pellston · elev 721 ft
- Y65 — Campbell-Pratt
Indian River · elev 614 ft
- N98 — Boyne City Municipal
Boyne City · elev 660 ft
- KBFA — Boyne Mountain
Boyne Falls · elev 719 ft
- Y30 — Pbeaaye
Topinabee · elev 690 ft
- KCVX — Charlevoix Municipal
Charlevoix · elev 669 ft
- Y94 — East Jordan City
East Jordan · elev 641 ft
- KSLH — Cheboygan County
Cheboygan · elev 640 ft
Frequently asked questions
How high does density altitude get at KMGN in summer?
On a typical July afternoon — around 76 °F at the nearest NOAA normals station — density altitude at Harbor Springs reaches roughly 1,975 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 KMGN on an average day?
It swings with the seasons: from roughly −1,879 ft at the coldest month's average temperature to about 1,364 ft at the warmest month's — all from a constant field elevation of 686 ft. The month-by-month table above carries the full year.
What is the field elevation of Harbor Springs?
686 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMGN (ICAO) / MGN (FAA), in Harbor Springs, Michigan.