Harrietta, Michigan · field elev 993 ft
Density Altitude at Eagles Landing (4Y9)
Eagles Landing sits at 993 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 2,619 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 | 20.0 | −1,428 ft | 27.9 | −866 ft |
| February | 21.6 | −1,314 ft | 31.1 | −641 ft |
| March | 29.9 | −725 ft | 41.3 | 63 ft |
| April | 41.8 | 97 ft | 54.7 | 961 ft |
| May | 53.9 | 909 ft | 68.4 | 1,851 ft |
| June | 63.7 | 1,549 ft | 77.2 | 2,407 ft |
| July | 67.4 | 1,787 ft | 80.6 | 2,619 ft |
| August | 66.1 | 1,703 ft | 78.7 | 2,501 ft |
| September | 58.8 | 1,231 ft | 71.7 | 2,061 ft |
| October | 46.5 | 415 ft | 57.2 | 1,126 ft |
| November | 35.0 | −370 ft | 43.9 | 239 ft |
| December | 25.4 | −1,043 ft | 33.0 | −509 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 4Y9
DENSITY ALTITUDE
Field elevation 993 ft — the air behaves like 2,644 ft.
- PRESSURE ALT
- 994 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
- 7Y2 — Thompsonville
Thompsonville · elev 793 ft
- KCAD — Wexford County
Cadillac · elev 1,307 ft
- Y88 — Green Lake
Interlochen · elev 866 ft
- KMBL — Manistee County/Blacker
Manistee · elev 621 ft
- 4M0 — Lake Ann Airway Estates
Traverse City · elev 820 ft
- Y91 — Home Acres Sky Ranch
Lake City · elev 1,246 ft
- 7D3 — Baldwin Municipal
Baldwin · elev 828 ft
- KFKS — Frankfort Dow Meml Field
Frankfort · elev 633 ft
Frequently asked questions
How high does density altitude get at 4Y9 in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Eagles Landing reaches roughly 2,619 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 4Y9 on an average day?
It swings with the seasons: from roughly −1,428 ft at the coldest month's average temperature to about 1,787 ft at the warmest month's — all from a constant field elevation of 993 ft. The month-by-month table above carries the full year.
What is the field elevation of Eagles Landing?
993 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4Y9 (FAA), in Harrietta, Michigan.