Dutch John, Utah · field elev 6,561 ft
Density Altitude at Dutch John (33U)
Dutch John is a genuine high-and-hot field: from 6,561 ft of elevation, a typical July afternoon (87 °F) pushes density altitude to about 9,752 ft — the airplane performs like it is 3,191 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 | 24.8 | 5,859 ft | 36.6 | 6,646 ft ▲ |
| February | 27.5 | 6,041 ft | 39.8 | 6,855 ft ▲ |
| March | 36.8 | 6,659 ft | 49.6 | 7,486 ft ▲ |
| April | 43.6 | 7,102 ft | 56.7 | 7,934 ft ▲ |
| May | 52.6 | 7,677 ft | 67.1 | 8,577 ft ⚠ |
| June | 62.3 | 8,282 ft | 79.2 | 9,305 ft ⚠ |
| July | 69.6 | 8,729 ft | 86.8 | 9,752 ft ⚠ |
| August | 68.0 | 8,632 ft | 84.4 | 9,612 ft ⚠ |
| September | 59.0 | 8,078 ft | 75.4 | 9,078 ft ⚠ |
| October | 46.7 | 7,301 ft | 61.5 | 8,233 ft ⚠ |
| November | 34.3 | 6,494 ft | 46.4 | 7,282 ft ▲ |
| December | 24.9 | 5,866 ft | 36.4 | 6,633 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 33U
DENSITY ALTITUDE high DA
Field elevation 6,561 ft — the air behaves like 9,764 ft.
- PRESSURE ALT
- 6,563 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
- TF9 — Taylor Flat
Dutch John · elev 5,638 ft
- 40U — Manila
Manila · elev 6,179 ft
- KVEL — Vernal Regional
Vernal · elev 5,274 ft
- 74V — Roosevelt Municipal
Roosevelt · elev 5,176 ft
- U69 — Duchesne Municipal
Duchesne · elev 5,831 ft
- KHCR — Heber Valley
Heber · elev 5,637 ft
- KPUC — Carbon County Regional/Buck Davis Field
Price · elev 5,958 ft
- 42U — Morgan County
Morgan · elev 5,020 ft
Frequently asked questions
How high does density altitude get at 33U in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Dutch John reaches roughly 9,752 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 33U on an average day?
It swings with the seasons: from roughly 5,859 ft at the coldest month's average temperature to about 8,729 ft at the warmest month's — all from a constant field elevation of 6,561 ft. The month-by-month table above carries the full year.
What is the field elevation of Dutch John?
6,561 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 33U (FAA), in Dutch John, Utah.