Cowley/Lovell/Byron, Wyoming · field elev 4,094 ft
Density Altitude at North Big Horn County (U68)
From a field elevation of 4,094 ft, a typical July afternoon at North Big Horn County (90 °F) raises density altitude to about 6,929 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 18.6 | 2,358 ft | 30.6 | 3,188 ft |
| February | 24.3 | 2,756 ft | 36.6 | 3,594 ft |
| March | 37.0 | 3,621 ft | 50.8 | 4,531 ft |
| April | 46.0 | 4,218 ft | 59.9 | 5,115 ft ▲ |
| May | 56.1 | 4,873 ft | 69.6 | 5,723 ft ▲ |
| June | 65.5 | 5,468 ft | 79.9 | 6,354 ft ▲ |
| July | 73.5 | 5,964 ft | 89.5 | 6,929 ft ▲ |
| August | 71.3 | 5,828 ft | 87.8 | 6,828 ft ▲ |
| September | 60.5 | 5,153 ft | 76.7 | 6,160 ft ▲ |
| October | 46.9 | 4,277 ft | 61.2 | 5,197 ft ▲ |
| November | 32.6 | 3,324 ft | 45.4 | 4,179 ft |
| December | 20.9 | 2,519 ft | 32.9 | 3,345 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 U68
DENSITY ALTITUDE caution
Field elevation 4,094 ft — the air behaves like 6,959 ft.
- PRESSURE ALT
- 4,096 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- 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
- KPOY — Powell Municipal
Powell · elev 5,096 ft
- KGEY — South Big Horn County
Greybull · elev 3,942 ft
- KCOD — Yellowstone Regional
Cody · elev 5,102 ft
- KWRL — Worland Municipal
Worland · elev 4,252 ft
- KSHR — Sheridan County
Sheridan · elev 4,021 ft
- KHSG — Hot Springs County
Thermopolis · elev 4,892 ft
- KBYG — Johnson County
Buffalo · elev 4,970 ft
- KDUB — Dubois Municipal
Dubois · elev 7,299 ft
Frequently asked questions
How high does density altitude get at U68 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at North Big Horn County reaches roughly 6,929 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 U68 on an average day?
It swings with the seasons: from roughly 2,358 ft at the coldest month's average temperature to about 5,964 ft at the warmest month's — all from a constant field elevation of 4,094 ft. The month-by-month table above carries the full year.
What is the field elevation of North Big Horn County?
4,094 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U68 (FAA), in Cowley/Lovell/Byron, Wyoming.