Duchesne, Utah · field elev 5,831 ft
Density Altitude at Duchesne Municipal (U69)
Duchesne Municipal is a genuine high-and-hot field: from 5,831 ft of elevation, a typical July afternoon (89 °F) pushes density altitude to about 8,970 ft — the airplane performs like it is 3,139 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 | 21.9 | 4,754 ft | 33.4 | 5,532 ft ▲ |
| February | 29.1 | 5,244 ft | 41.1 | 6,040 ft ▲ |
| March | 41.1 | 6,040 ft | 55.2 | 6,946 ft ▲ |
| April | 48.5 | 6,520 ft | 63.3 | 7,453 ft ▲ |
| May | 57.4 | 7,085 ft | 72.5 | 8,017 ft ⚠ |
| June | 66.3 | 7,638 ft | 83.1 | 8,652 ft ⚠ |
| July | 72.4 | 8,011 ft | 88.5 | 8,970 ft ⚠ |
| August | 70.1 | 7,871 ft | 85.5 | 8,794 ft ⚠ |
| September | 61.6 | 7,348 ft | 77.1 | 8,295 ft ⚠ |
| October | 49.3 | 6,571 ft | 63.8 | 7,484 ft ▲ |
| November | 35.8 | 5,691 ft | 48.3 | 6,507 ft ▲ |
| December | 23.9 | 4,891 ft | 34.8 | 5,625 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 U69
DENSITY ALTITUDE high DA
Field elevation 5,831 ft — the air behaves like 8,999 ft.
- PRESSURE ALT
- 5,833 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 Utah fields
- 74V — Roosevelt Municipal
Roosevelt · elev 5,176 ft
- KPUC — Carbon County Regional/Buck Davis Field
Price · elev 5,958 ft
- KVEL — Vernal Regional
Vernal · elev 5,274 ft
- KHCR — Heber Valley
Heber · elev 5,637 ft
- 69V — Huntington Municipal
Huntington · elev 5,915 ft
- 40U — Manila
Manila · elev 6,179 ft
- KSPK — Spanish Fork Municipal/Woodhouse Field
Spanish Fork · elev 4,530 ft
- KPVU — Provo Municipal
Provo · elev 4,497 ft
Frequently asked questions
How high does density altitude get at U69 in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Duchesne Municipal reaches roughly 8,970 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 U69 on an average day?
It swings with the seasons: from roughly 4,754 ft at the coldest month's average temperature to about 8,011 ft at the warmest month's — all from a constant field elevation of 5,831 ft. The month-by-month table above carries the full year.
What is the field elevation of Duchesne Municipal?
5,831 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U69 (FAA), in Duchesne, Utah.