Canton, South Dakota · field elev 1,290 ft
Density Altitude at Canton Municipal (7G9)
Canton Municipal sits at 1,290 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 3,148 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 | 15.5 | −1,380 ft | 25.3 | −678 ft |
| February | 20.5 | −1,020 ft | 30.6 | −305 ft |
| March | 32.8 | −152 ft | 43.7 | 595 ft |
| April | 46.1 | 756 ft | 57.8 | 1,531 ft |
| May | 58.3 | 1,564 ft | 69.8 | 2,304 ft |
| June | 69.0 | 2,253 ft | 79.8 | 2,932 ft |
| July | 72.5 | 2,475 ft | 83.3 | 3,148 ft |
| August | 69.6 | 2,292 ft | 80.2 | 2,957 ft |
| September | 62.0 | 1,804 ft | 73.6 | 2,544 ft |
| October | 48.2 | 897 ft | 60.0 | 1,675 ft |
| November | 33.3 | −117 ft | 43.5 | 581 ft |
| December | 20.3 | −1,034 ft | 29.4 | −389 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 7G9
DENSITY ALTITUDE
Field elevation 1,290 ft — the air behaves like 3,130 ft.
- PRESSURE ALT
- 1,291 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 South Dakota fields
- Y14 — Marv Skie-Lincoln County
Tea · elev 1,511 ft
- KFSD — Joe Foss Field
Sioux Falls · elev 1,430 ft
- KVMR — Harold Davidson Field
Vermillion · elev 1,147 ft
- 4P3 — Flandreau Municipal
Flandreau · elev 1,645 ft
- KYKN — Chan Gurney Municipal
Yankton · elev 1,306 ft
- 7K7 — Graham Field
North Sioux City · elev 1,109 ft
- KMDS — Madison Municipal
Madison · elev 1,718 ft
- 8D9 — Howard Municipal
Howard · elev 1,586 ft
Frequently asked questions
How high does density altitude get at 7G9 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Canton Municipal reaches roughly 3,148 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 7G9 on an average day?
It swings with the seasons: from roughly −1,380 ft at the coldest month's average temperature to about 2,475 ft at the warmest month's — all from a constant field elevation of 1,290 ft. The month-by-month table above carries the full year.
What is the field elevation of Canton Municipal?
1,290 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 7G9 (FAA), in Canton, South Dakota.