Cheyenne, Wyoming · field elev 6,160 ft
Density Altitude at Cheyenne Regional/Jerry Olson Field (KCYS)
Cheyenne Regional/Jerry Olson Field is a genuine high-and-hot field: from 6,160 ft of elevation, a typical July afternoon (84 °F) pushes density altitude to about 9,109 ft — the airplane performs like it is 2,949 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 | 29.2 | 5,658 ft | 40.0 | 6,374 ft ▲ |
| February | 29.5 | 5,679 ft | 40.6 | 6,413 ft ▲ |
| March | 37.1 | 6,184 ft | 49.1 | 6,962 ft ▲ |
| April | 42.8 | 6,556 ft | 54.8 | 7,324 ft ▲ |
| May | 52.3 | 7,166 ft | 64.4 | 7,923 ft ▲ |
| June | 63.1 | 7,842 ft | 76.7 | 8,670 ft ⚠ |
| July | 70.1 | 8,272 ft | 84.1 | 9,109 ft ⚠ |
| August | 68.1 | 8,150 ft | 82.0 | 8,985 ft ⚠ |
| September | 59.6 | 7,625 ft | 73.3 | 8,465 ft ⚠ |
| October | 46.5 | 6,795 ft | 59.1 | 7,594 ft ▲ |
| November | 36.1 | 6,118 ft | 47.5 | 6,860 ft ▲ |
| December | 28.7 | 5,625 ft | 39.3 | 6,328 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 KCYS
DENSITY ALTITUDE high DA
Field elevation 6,160 ft — the air behaves like 9,103 ft.
- PRESSURE ALT
- 6,162 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
- 82V — Pine Bluffs Municipal
Pine Bluffs · elev 5,152 ft
- KLAR — Laramie Regional
Laramie · elev 7,284 ft
- KEAN — Phifer Airfield
Wheatland · elev 4,779 ft
- KTOR — Torrington Municipal
Torrington · elev 4,207 ft
- KGUR — Camp Guernsey
Guernsey · elev 4,402 ft
- 80V — Medicine Bow
Medicine Bow · elev 6,658 ft
- 76V — Thomas Meml
Glendo · elev 4,666 ft
- KSAA — Shively Field
Saratoga · elev 7,014 ft
Frequently asked questions
How high does density altitude get at KCYS in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Cheyenne Regional/Jerry Olson Field reaches roughly 9,109 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 KCYS on an average day?
It swings with the seasons: from roughly 5,625 ft at the coldest month's average temperature to about 8,272 ft at the warmest month's — all from a constant field elevation of 6,160 ft. The month-by-month table above carries the full year.
What is the field elevation of Cheyenne Regional/Jerry Olson Field?
6,160 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCYS (ICAO) / CYS (FAA), in Cheyenne, Wyoming.