West Branch, Michigan · field elev 882 ft
Density Altitude at West Branch Community (Y31)
West Branch Community sits at 882 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 2,465 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 | 18.9 | −1,647 ft | 27.4 | −1,040 ft |
| February | 20.3 | −1,546 ft | 30.4 | −829 ft |
| March | 29.9 | −864 ft | 40.9 | −103 ft |
| April | 42.0 | −27 ft | 53.7 | 758 ft |
| May | 54.6 | 818 ft | 67.0 | 1,625 ft |
| June | 64.2 | 1,444 ft | 76.3 | 2,215 ft |
| July | 68.3 | 1,708 ft | 80.3 | 2,465 ft |
| August | 66.5 | 1,593 ft | 78.5 | 2,352 ft |
| September | 58.9 | 1,100 ft | 71.4 | 1,905 ft |
| October | 46.9 | 304 ft | 57.8 | 1,028 ft |
| November | 35.3 | −488 ft | 43.6 | 81 ft |
| December | 25.5 | −1,175 ft | 32.7 | −668 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 Y31
DENSITY ALTITUDE
Field elevation 882 ft — the air behaves like 2,446 ft.
- PRESSURE ALT
- 883 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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Frequently asked questions
How high does density altitude get at Y31 in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at West Branch Community reaches roughly 2,465 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 Y31 on an average day?
It swings with the seasons: from roughly −1,647 ft at the coldest month's average temperature to about 1,708 ft at the warmest month's — all from a constant field elevation of 882 ft. The month-by-month table above carries the full year.
What is the field elevation of West Branch Community?
882 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Y31 (FAA), in West Branch, Michigan.