Manistique, Michigan · field elev 684 ft
Density Altitude at Schoolcraft County (KISQ)
Schoolcraft County sits at 684 ft, and even a typical August afternoon (74 °F) only lifts density altitude to about 1,796 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 | 17.8 | −1,976 ft | 25.1 | −1,451 ft |
| February | 19.0 | −1,889 ft | 27.3 | −1,295 ft |
| March | 26.9 | −1,323 ft | 35.0 | −755 ft |
| April | 37.7 | −569 ft | 45.4 | −43 ft |
| May | 49.0 | 200 ft | 57.1 | 738 ft |
| June | 59.1 | 869 ft | 67.2 | 1,394 ft |
| July | 64.8 | 1,240 ft | 73.0 | 1,764 ft |
| August | 64.8 | 1,240 ft | 73.5 | 1,796 ft |
| September | 57.8 | 784 ft | 66.0 | 1,317 ft |
| October | 45.9 | −9 ft | 53.3 | 487 ft |
| November | 34.5 | −790 ft | 40.9 | −349 ft |
| December | 24.6 | −1,487 ft | 31.0 | −1,034 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 KISQ
DENSITY ALTITUDE
Field elevation 684 ft — the air behaves like 1,827 ft.
- PRESSURE ALT
- 685 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
- 5Y7 — Hanley Field
Munising · elev 984 ft
- KSJX — Beaver Island
Beaver Island · elev 670 ft
- 6Y8 — Welke
Beaver Island · elev 664 ft
- 6Y3 — North Fox Island
North Fox Island · elev 639 ft
- KERY — Luce County
Newberry · elev 869 ft
- Y98 — Grand Marais
Grand Marais · elev 838 ft
- KESC — Delta County
Escanaba · elev 609 ft
- 6Y4 — Van Effen Field
Rock · elev 970 ft
Frequently asked questions
How high does density altitude get at KISQ in summer?
On a typical August afternoon — around 74 °F at the nearest NOAA normals station — density altitude at Schoolcraft County reaches roughly 1,796 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 KISQ on an average day?
It swings with the seasons: from roughly −1,976 ft at the coldest month's average temperature to about 1,240 ft at the warmest month's — all from a constant field elevation of 684 ft. The month-by-month table above carries the full year.
What is the field elevation of Schoolcraft County?
684 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KISQ (ICAO) / ISQ (FAA), in Manistique, Michigan.