Grand Rapids, Michigan · field elev 794 ft
Density Altitude at Gerald R Ford International (KGRR)
Gerald R Ford International sits at 794 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,531 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 | 24.8 | −1,335 ft | 31.0 | −897 ft |
| February | 26.6 | −1,207 ft | 33.7 | −708 ft |
| March | 35.7 | −570 ft | 44.5 | 33 ft |
| April | 47.6 | 242 ft | 57.8 | 920 ft |
| May | 59.2 | 1,011 ft | 69.8 | 1,696 ft |
| June | 68.9 | 1,638 ft | 79.4 | 2,301 ft |
| July | 72.8 | 1,886 ft | 83.1 | 2,531 ft |
| August | 71.1 | 1,778 ft | 80.9 | 2,394 ft |
| September | 63.5 | 1,291 ft | 73.9 | 1,956 ft |
| October | 51.5 | 503 ft | 60.7 | 1,109 ft |
| November | 40.0 | −274 ft | 47.2 | 215 ft |
| December | 30.4 | −939 ft | 36.1 | −542 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 KGRR
DENSITY ALTITUDE
Field elevation 794 ft — the air behaves like 2,525 ft.
- PRESSURE ALT
- 795 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
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- 08C — Riverview
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- 35C — Wells
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- 9D9 — Hastings
Hastings · elev 800 ft
- 56C — Boulder Canyon
Belding · elev 823 ft
- 8D4 — Paul C Miller/Sparta
Sparta · elev 775 ft
- Z98 — Ottawa Exec
Zeeland · elev 756 ft
Frequently asked questions
How high does density altitude get at KGRR in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Gerald R Ford International reaches roughly 2,531 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 KGRR on an average day?
It swings with the seasons: from roughly −1,335 ft at the coldest month's average temperature to about 1,886 ft at the warmest month's — all from a constant field elevation of 794 ft. The month-by-month table above carries the full year.
What is the field elevation of Gerald R Ford International?
794 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGRR (ICAO) / GRR (FAA), in Grand Rapids, Michigan.