Sparta, Michigan · field elev 775 ft
Density Altitude at Paul C Miller/Sparta (8D4)
Paul C Miller/Sparta sits at 775 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,520 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 | 22.7 | −1,508 ft | 31.7 | −872 ft |
| February | 24.5 | −1,380 ft | 35.2 | −628 ft |
| March | 33.6 | −739 ft | 45.3 | 64 ft |
| April | 45.0 | 43 ft | 57.5 | 876 ft |
| May | 56.7 | 824 ft | 69.5 | 1,653 ft |
| June | 66.3 | 1,448 ft | 79.4 | 2,278 ft |
| July | 70.1 | 1,691 ft | 83.3 | 2,520 ft |
| August | 68.5 | 1,589 ft | 81.4 | 2,402 ft |
| September | 61.4 | 1,131 ft | 74.6 | 1,977 ft |
| October | 49.9 | 373 ft | 61.8 | 1,157 ft |
| November | 37.9 | −441 ft | 47.2 | 192 ft |
| December | 28.6 | −1,089 ft | 36.1 | −566 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 8D4
DENSITY ALTITUDE
Field elevation 775 ft — the air behaves like 2,501 ft.
- PRESSURE ALT
- 776 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
- 24M — Wilderness Airpark
Kent City · elev 785 ft
- 35C — Wells
Rockford · elev 890 ft
- 08C — Riverview
Jenison · elev 603 ft
- 73G — Cherry Field
Nunica · elev 629 ft
- KGRR — Gerald R Ford International
Grand Rapids · elev 794 ft
- 24C — Lowell City
Lowell · elev 681 ft
- 56C — Boulder Canyon
Belding · elev 823 ft
- 5N7 — Hat Field
Nunica · elev 625 ft
Frequently asked questions
How high does density altitude get at 8D4 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Paul C Miller/Sparta reaches roughly 2,520 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 8D4 on an average day?
It swings with the seasons: from roughly −1,508 ft at the coldest month's average temperature to about 1,691 ft at the warmest month's — all from a constant field elevation of 775 ft. The month-by-month table above carries the full year.
What is the field elevation of Paul C Miller/Sparta?
775 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8D4 (FAA), in Sparta, Michigan.