Indian River, Michigan · field elev 614 ft
Density Altitude at Campbell-Pratt (Y65)
Campbell-Pratt sits at 614 ft, and even a typical July afternoon (79 °F) only lifts density altitude to about 2,075 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 | −2,064 ft | 26.7 | −1,425 ft |
| February | 18.0 | −2,049 ft | 28.7 | −1,284 ft |
| March | 27.0 | −1,404 ft | 38.5 | −601 ft |
| April | 39.5 | −532 ft | 51.7 | 294 ft |
| May | 52.2 | 327 ft | 66.1 | 1,237 ft |
| June | 61.9 | 965 ft | 75.8 | 1,855 ft |
| July | 66.0 | 1,231 ft | 79.3 | 2,075 ft |
| August | 64.7 | 1,147 ft | 77.9 | 1,987 ft |
| September | 57.3 | 665 ft | 70.2 | 1,500 ft |
| October | 45.9 | −96 ft | 56.6 | 618 ft |
| November | 35.2 | −829 ft | 43.5 | −258 ft |
| December | 25.2 | −1,532 ft | 32.6 | −1,010 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 Y65
DENSITY ALTITUDE
Field elevation 614 ft — the air behaves like 2,056 ft.
- PRESSURE ALT
- 615 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
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- KSLH — Cheboygan County
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- KBFA — Boyne Mountain
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- N98 — Boyne City Municipal
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- 6Y1 — Bois Blanc Island
Bois Blanc Island · elev 664 ft
Frequently asked questions
How high does density altitude get at Y65 in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Campbell-Pratt reaches roughly 2,075 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 Y65 on an average day?
It swings with the seasons: from roughly −2,064 ft at the coldest month's average temperature to about 1,231 ft at the warmest month's — all from a constant field elevation of 614 ft. The month-by-month table above carries the full year.
What is the field elevation of Campbell-Pratt?
614 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Y65 (FAA), in Indian River, Michigan.