Bridgeport, California · field elev 6,472 ft
Density Altitude at Bryant Field (O57)
Bryant Field is a genuine high-and-hot field: from 6,472 ft of elevation, a typical July afternoon (85 °F) pushes density altitude to about 9,533 ft — the airplane performs like it is 3,061 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 | 26.7 | 5,877 ft | 43.2 | 6,966 ft ▲ |
| February | 29.2 | 6,045 ft | 45.4 | 7,108 ft ▲ |
| March | 36.3 | 6,516 ft | 52.4 | 7,555 ft ▲ |
| April | 42.0 | 6,889 ft | 59.3 | 7,988 ft ▲ |
| May | 49.2 | 7,352 ft | 66.8 | 8,450 ft ⚠ |
| June | 57.7 | 7,888 ft | 76.7 | 9,048 ft ⚠ |
| July | 64.2 | 8,291 ft | 84.9 | 9,533 ft ⚠ |
| August | 62.3 | 8,174 ft | 83.6 | 9,457 ft ⚠ |
| September | 55.7 | 7,763 ft | 77.6 | 9,102 ft ⚠ |
| October | 45.3 | 7,102 ft | 66.5 | 8,432 ft ⚠ |
| November | 35.8 | 6,483 ft | 54.7 | 7,700 ft ▲ |
| December | 28.0 | 5,965 ft | 44.6 | 7,057 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 O57
DENSITY ALTITUDE high DA
Field elevation 6,472 ft — the air behaves like 9,539 ft.
- PRESSURE ALT
- 6,474 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 California fields
- O24 — Lee Vining
Lee Vining · elev 6,802 ft
- M45 — Alpine County
Markleeville · elev 5,872 ft
- KMMH — Mammoth Yosemite
Mammoth Lakes · elev 7,135 ft
- E45 — Groveland/Yosemite
Groveland · elev 2,933 ft
- KTVL — Lake Tahoe
South Lake Tahoe · elev 6,268 ft
- O22 — Columbia
Columbia · elev 2,121 ft
- KMPI — Mariposa-Yosemite
Mariposa · elev 2,254 ft
- KBIH — Bishop
Bishop · elev 4,124 ft
Frequently asked questions
How high does density altitude get at O57 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Bryant Field reaches roughly 9,533 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 O57 on an average day?
It swings with the seasons: from roughly 5,877 ft at the coldest month's average temperature to about 8,291 ft at the warmest month's — all from a constant field elevation of 6,472 ft. The month-by-month table above carries the full year.
What is the field elevation of Bryant Field?
6,472 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is O57 (FAA), in Bridgeport, California.