Middleton, Wisconsin · field elev 928 ft
Density Altitude at Middleton Municipal/Morey Field (C29)
Middleton Municipal/Morey Field sits at 928 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,602 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 | 18.1 | −1,647 ft | 26.5 | −1,046 ft |
| February | 21.7 | −1,388 ft | 30.6 | −758 ft |
| March | 33.1 | −583 ft | 42.6 | 70 ft |
| April | 45.5 | 267 ft | 56.0 | 967 ft |
| May | 57.6 | 1,072 ft | 68.0 | 1,745 ft |
| June | 67.8 | 1,732 ft | 78.0 | 2,377 ft |
| July | 71.7 | 1,981 ft | 81.6 | 2,602 ft |
| August | 69.8 | 1,860 ft | 79.6 | 2,477 ft |
| September | 62.0 | 1,359 ft | 72.5 | 2,032 ft |
| October | 49.5 | 536 ft | 59.8 | 1,216 ft |
| November | 35.8 | −396 ft | 44.7 | 213 ft |
| December | 24.1 | −1,217 ft | 31.9 | −667 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 C29
DENSITY ALTITUDE
Field elevation 928 ft — the air behaves like 2,626 ft.
- PRESSURE ALT
- 929 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 C29 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Middleton Municipal/Morey Field reaches roughly 2,602 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 C29 on an average day?
It swings with the seasons: from roughly −1,647 ft at the coldest month's average temperature to about 1,981 ft at the warmest month's — all from a constant field elevation of 928 ft. The month-by-month table above carries the full year.
What is the field elevation of Middleton Municipal/Morey Field?
928 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is C29 (FAA), in Middleton, Wisconsin.