Tooele, Utah · field elev 4,321 ft
Density Altitude at Bolinder Field/Tooele Valley (KTVY)
From a field elevation of 4,321 ft, a typical July afternoon at Bolinder Field/Tooele Valley (91 °F) raises density altitude to about 7,298 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 | 30.7 | 3,477 ft | 36.4 | 3,862 ft |
| February | 35.4 | 3,795 ft | 42.0 | 4,235 ft |
| March | 45.1 | 4,439 ft | 52.9 | 4,946 ft |
| April | 51.5 | 4,856 ft | 60.4 | 5,425 ft ▲ |
| May | 61.9 | 5,519 ft | 70.6 | 6,062 ft ▲ |
| June | 72.0 | 6,148 ft | 82.0 | 6,756 ft ▲ |
| July | 81.3 | 6,714 ft | 91.1 | 7,298 ft ▲ |
| August | 79.1 | 6,582 ft | 88.9 | 7,168 ft ▲ |
| September | 68.5 | 5,932 ft | 78.0 | 6,515 ft ▲ |
| October | 54.2 | 5,030 ft | 62.6 | 5,563 ft ▲ |
| November | 41.1 | 4,175 ft | 47.9 | 4,622 ft |
| December | 31.6 | 3,538 ft | 37.1 | 3,909 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 KTVY
DENSITY ALTITUDE caution
Field elevation 4,321 ft — the air behaves like 7,292 ft.
- PRESSURE ALT
- 4,323 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 Utah fields
- KSVR — South Valley Regional
Salt Lake City · elev 4,606 ft
- KSLC — Salt Lake City International
Salt Lake City · elev 4,231 ft
- KBTF — Skypark
Bountiful · elev 4,237 ft
- UT9 — West Desert Airpark
Fairfield · elev 4,886 ft
- 2UT — Fremont Island Upper
Hooper · elev 4,654 ft
- 1UT — Fremont Island Lower
Hooper · elev 4,234 ft
- KPVU — Provo Municipal
Provo · elev 4,497 ft
- KOGD — Ogden-Hinckley
Ogden · elev 4,473 ft
Frequently asked questions
How high does density altitude get at KTVY in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Bolinder Field/Tooele Valley reaches roughly 7,298 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 KTVY on an average day?
It swings with the seasons: from roughly 3,477 ft at the coldest month's average temperature to about 6,714 ft at the warmest month's — all from a constant field elevation of 4,321 ft. The month-by-month table above carries the full year.
What is the field elevation of Bolinder Field/Tooele Valley?
4,321 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTVY (ICAO) / TVY (FAA), in Tooele, Utah.