Cassville, Wisconsin · field elev 627 ft
Density Altitude at Cassville Municipal (C74)
Cassville Municipal sits at 627 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,370 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 | 19.1 | −1,953 ft | 27.9 | −1,324 ft |
| February | 23.4 | −1,644 ft | 32.8 | −980 ft |
| March | 36.0 | −757 ft | 45.2 | −127 ft |
| April | 49.0 | 129 ft | 59.3 | 812 ft |
| May | 60.5 | 890 ft | 71.0 | 1,567 ft |
| June | 70.3 | 1,523 ft | 80.4 | 2,159 ft |
| July | 73.9 | 1,751 ft | 83.8 | 2,370 ft |
| August | 71.7 | 1,612 ft | 81.6 | 2,234 ft |
| September | 64.2 | 1,131 ft | 74.7 | 1,802 ft |
| October | 51.5 | 296 ft | 61.4 | 949 ft |
| November | 37.5 | −653 ft | 46.0 | −73 ft |
| December | 25.3 | −1,508 ft | 33.0 | −966 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 C74
DENSITY ALTITUDE
Field elevation 627 ft — the air behaves like 2,383 ft.
- PRESSURE ALT
- 628 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 Wisconsin fields
- 73C — Lancaster Municipal
Lancaster · elev 1,016 ft
- KPDC — Prairie Du Chien Municipal
Prairie Du Chien · elev 660 ft
- KPVB — Platteville Municipal
Platteville · elev 1,025 ft
- KOVS — Boscobel
Boscobel · elev 673 ft
- KMRJ — Iowa County
Mineral Point · elev 1,171 ft
- 93C — Richland
Richland Center · elev 742 ft
- KLNR — Tri-County Regional
Lone Rock · elev 717 ft
- Y51 — Viroqua Municipal
Viroqua · elev 1,292 ft
Frequently asked questions
How high does density altitude get at C74 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Cassville Municipal reaches roughly 2,370 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 C74 on an average day?
It swings with the seasons: from roughly −1,953 ft at the coldest month's average temperature to about 1,751 ft at the warmest month's — all from a constant field elevation of 627 ft. The month-by-month table above carries the full year.
What is the field elevation of Cassville Municipal?
627 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is C74 (FAA), in Cassville, Wisconsin.