Rock Springs, Wyoming · field elev 6,765 ft
Density Altitude at Southwest Wyoming Regional (KRKS)
Southwest Wyoming Regional is a genuine high-and-hot field: from 6,765 ft of elevation, a typical July afternoon (84 °F) pushes density altitude to about 9,840 ft — the airplane performs like it is 3,075 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 | 21.5 | 5,889 ft | 29.5 | 6,428 ft ▲ |
| February | 24.3 | 6,079 ft | 32.9 | 6,654 ft ▲ |
| March | 34.0 | 6,727 ft | 43.9 | 7,372 ft ▲ |
| April | 41.2 | 7,198 ft | 52.8 | 7,939 ft ▲ |
| May | 50.8 | 7,813 ft | 63.2 | 8,586 ft ⚠ |
| June | 61.0 | 8,451 ft | 75.0 | 9,302 ft ⚠ |
| July | 69.4 | 8,965 ft | 84.1 | 9,840 ft ⚠ |
| August | 67.3 | 8,837 ft | 81.5 | 9,688 ft ⚠ |
| September | 57.3 | 8,221 ft | 70.7 | 9,043 ft ⚠ |
| October | 44.5 | 7,411 ft | 56.0 | 8,140 ft ⚠ |
| November | 31.2 | 6,541 ft | 40.5 | 7,152 ft ▲ |
| December | 21.4 | 5,882 ft | 29.5 | 6,428 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 KRKS
DENSITY ALTITUDE high DA
Field elevation 6,765 ft — the air behaves like 9,835 ft.
- PRESSURE ALT
- 6,767 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 Wyoming fields
- 48U — Gtr Green River Intergalactic Spaceport
Green River · elev 7,182 ft
- KFBR — Fort Bridger
Fort Bridger · elev 7,038 ft
- KEMM — Kemmerer Municipal
Kemmerer · elev 7,289 ft
- KLND — Hunt Field
Lander · elev 5,589 ft
- KBPI — Miley Meml Field
Big Piney · elev 6,994 ft
- KDWX — Dixon
Dixon · elev 6,549 ft
- KPNA — Ralph Wenz Field
Pinedale · elev 7,096 ft
- KRWL — Rawlins Municipal/Harvey Field
Rawlins · elev 6,817 ft
Frequently asked questions
How high does density altitude get at KRKS in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Southwest Wyoming Regional reaches roughly 9,840 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 KRKS on an average day?
It swings with the seasons: from roughly 5,882 ft at the coldest month's average temperature to about 8,965 ft at the warmest month's — all from a constant field elevation of 6,765 ft. The month-by-month table above carries the full year.
What is the field elevation of Southwest Wyoming Regional?
6,765 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRKS (ICAO) / RKS (FAA), in Rock Springs, Wyoming.