Clark, South Dakota · field elev 1,793 ft
Density Altitude at Clark County (8D7)
Clark County sits at 1,793 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 3,663 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 | 12.3 | −980 ft | 21.1 | −346 ft |
| February | 16.5 | −675 ft | 25.9 | −6 ft |
| March | 28.8 | 197 ft | 38.7 | 880 ft |
| April | 42.4 | 1,131 ft | 53.3 | 1,857 ft |
| May | 55.5 | 2,001 ft | 66.4 | 2,705 ft |
| June | 66.2 | 2,692 ft | 76.5 | 3,341 ft |
| July | 71.2 | 3,009 ft | 81.7 | 3,663 ft |
| August | 69.1 | 2,877 ft | 80.1 | 3,564 ft |
| September | 60.4 | 2,320 ft | 71.8 | 3,047 ft |
| October | 45.8 | 1,360 ft | 56.5 | 2,067 ft |
| November | 30.6 | 323 ft | 40.0 | 969 ft |
| December | 18.2 | −553 ft | 26.6 | 43 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 8D7
DENSITY ALTITUDE
Field elevation 1,793 ft — the air behaves like 3,681 ft.
- PRESSURE ALT
- 1,794 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
- KATY — Watertown Regional
Watertown · elev 1,749 ft
- 1D7 — The Sigurd Anderson
Webster · elev 1,858 ft
- 6E5 — Wilder
Desmet · elev 1,730 ft
- 1D8 — Redfield Municipal
Redfield · elev 1,309 ft
- KHON — Huron Regional
Huron · elev 1,289 ft
- 3A9 — Arlington Municipal
Arlington · elev 1,818 ft
- 2E6 — Groton Municipal
Groton · elev 1,310 ft
- KABR — Aberdeen Regional
Aberdeen · elev 1,302 ft
Frequently asked questions
How high does density altitude get at 8D7 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Clark County reaches roughly 3,663 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 8D7 on an average day?
It swings with the seasons: from roughly −980 ft at the coldest month's average temperature to about 3,009 ft at the warmest month's — all from a constant field elevation of 1,793 ft. The month-by-month table above carries the full year.
What is the field elevation of Clark County?
1,793 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8D7 (FAA), in Clark, South Dakota.