Walsenburg, Colorado · field elev 6,055 ft
Density Altitude at Spanish Peaks Airfield (4V1)
Spanish Peaks Airfield is a genuine high-and-hot field: from 6,055 ft of elevation, a typical July afternoon (87 °F) pushes density altitude to about 9,176 ft — the airplane performs like it is 3,121 ft above the field before the wheels roll.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 34.0 | 5,849 ft | 47.3 | 6,718 ft ▲ |
| February | 35.4 | 5,942 ft | 49.3 | 6,846 ft ▲ |
| March | 42.1 | 6,382 ft | 57.1 | 7,340 ft ▲ |
| April | 48.5 | 6,795 ft | 63.4 | 7,733 ft ▲ |
| May | 57.6 | 7,372 ft | 72.5 | 8,289 ft ⚠ |
| June | 67.7 | 7,997 ft | 83.5 | 8,947 ft ⚠ |
| July | 72.5 | 8,289 ft | 87.4 | 9,176 ft ⚠ |
| August | 70.6 | 8,174 ft | 85.1 | 9,041 ft ⚠ |
| September | 63.6 | 7,745 ft | 79.2 | 8,692 ft ⚠ |
| October | 52.5 | 7,050 ft | 68.4 | 8,040 ft ⚠ |
| November | 41.8 | 6,362 ft | 55.9 | 7,265 ft ▲ |
| December | 33.4 | 5,809 ft | 46.5 | 6,666 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 4V1
DENSITY ALTITUDE high DA
Field elevation 6,055 ft — the air behaves like 9,153 ft.
- PRESSURE ALT
- 6,057 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 Colorado fields
- 07V — Cuchara Valley At La Veta
La Veta · elev 7,153 ft
- KTAD — Perry Stokes
Trinidad · elev 5,762 ft
- C08 — Silver West
Westcliffe · elev 8,290 ft
- KPUB — Pueblo Meml
Pueblo · elev 4,729 ft
- 05V — Blanca
Blanca · elev 7,720 ft
- 1V6 — Fremont County
Canon City · elev 5,442 ft
- KALS — San Luis Valley Regional/Bergman Field
Alamosa · elev 7,540 ft
- 1V8 — Leach
Center · elev 7,598 ft
Frequently asked questions
How high does density altitude get at 4V1 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Spanish Peaks Airfield reaches roughly 9,176 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 4V1 on an average day?
It swings with the seasons: from roughly 5,809 ft at the coldest month's average temperature to about 8,289 ft at the warmest month's — all from a constant field elevation of 6,055 ft. The month-by-month table above carries the full year.
What is the field elevation of Spanish Peaks Airfield?
6,055 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4V1 (FAA), in Walsenburg, Colorado.