Vermillion, South Dakota · field elev 1,147 ft
Density Altitude at Harold Davidson Field (KVMR)
Harold Davidson Field sits at 1,147 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 3,109 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 | 20.4 | −1,206 ft | 30.5 | −491 ft |
| February | 25.0 | −878 ft | 36.1 | −102 ft |
| March | 36.8 | −54 ft | 48.4 | 733 ft |
| April | 48.9 | 767 ft | 61.9 | 1,622 ft |
| May | 60.4 | 1,525 ft | 72.7 | 2,313 ft |
| June | 70.7 | 2,186 ft | 82.2 | 2,906 ft |
| July | 74.4 | 2,420 ft | 85.5 | 3,109 ft |
| August | 72.0 | 2,268 ft | 83.3 | 2,974 ft |
| September | 64.9 | 1,816 ft | 78.1 | 2,651 ft |
| October | 51.6 | 947 ft | 64.6 | 1,796 ft |
| November | 36.7 | −61 ft | 48.2 | 720 ft |
| December | 24.3 | −928 ft | 34.0 | −247 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 KVMR
DENSITY ALTITUDE
Field elevation 1,147 ft — the air behaves like 3,140 ft.
- PRESSURE ALT
- 1,148 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
- KYKN — Chan Gurney Municipal
Yankton · elev 1,306 ft
- 7K7 — Graham Field
North Sioux City · elev 1,109 ft
- 7G9 — Canton Municipal
Canton · elev 1,290 ft
- Y14 — Marv Skie-Lincoln County
Tea · elev 1,511 ft
- Y03 — Springfield Municipal
Springfield · elev 1,324 ft
- KFSD — Joe Foss Field
Sioux Falls · elev 1,430 ft
- 8V3 — Parkston Municipal
Parkston · elev 1,418 ft
- KAGZ — Wagner Municipal
Wagner · elev 1,478 ft
Frequently asked questions
How high does density altitude get at KVMR in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Harold Davidson Field reaches roughly 3,109 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 KVMR on an average day?
It swings with the seasons: from roughly −1,206 ft at the coldest month's average temperature to about 2,420 ft at the warmest month's — all from a constant field elevation of 1,147 ft. The month-by-month table above carries the full year.
What is the field elevation of Harold Davidson Field?
1,147 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KVMR (ICAO) / VMR (FAA), in Vermillion, South Dakota.