Mammoth Lakes, California · field elev 7,135 ft
Density Altitude at Mammoth Yosemite (KMMH)
Mammoth Yosemite is a genuine high-and-hot field: from 7,135 ft of elevation, a typical July afternoon (78 °F) pushes density altitude to about 9,917 ft — the airplane performs like it is 2,782 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 | 28.9 | 6,846 ft | 41.2 | 7,653 ft ▲ |
| February | 29.4 | 6,879 ft | 41.0 | 7,640 ft ▲ |
| March | 33.8 | 7,171 ft | 45.5 | 7,929 ft ▲ |
| April | 39.1 | 7,517 ft | 51.2 | 8,291 ft ⚠ |
| May | 47.4 | 8,051 ft | 60.4 | 8,865 ft ⚠ |
| June | 56.2 | 8,605 ft | 70.3 | 9,469 ft ⚠ |
| July | 63.4 | 9,049 ft | 77.8 | 9,917 ft ⚠ |
| August | 62.4 | 8,988 ft | 77.4 | 9,893 ft ⚠ |
| September | 55.5 | 8,561 ft | 71.3 | 9,529 ft ⚠ |
| October | 45.5 | 7,929 ft | 60.7 | 8,884 ft ⚠ |
| November | 36.2 | 7,328 ft | 49.3 | 8,171 ft ⚠ |
| December | 29.2 | 6,866 ft | 41.4 | 7,666 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 KMMH
DENSITY ALTITUDE high DA
Field elevation 7,135 ft — the air behaves like 9,929 ft.
- PRESSURE ALT
- 7,137 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
- KBIH — Bishop
Bishop · elev 4,124 ft
- O57 — Bryant Field
Bridgeport · elev 6,472 ft
- 2O7 — Independence
Independence · elev 3,908 ft
- KMPI — Mariposa-Yosemite
Mariposa · elev 2,254 ft
- O32 — Reedley Municipal
Reedley · elev 386 ft
- E45 — Groveland/Yosemite
Groveland · elev 2,933 ft
- KFAT — Fresno Yosemite International
Fresno · elev 336 ft
Frequently asked questions
How high does density altitude get at KMMH in summer?
On a typical July afternoon — around 78 °F at the nearest NOAA normals station — density altitude at Mammoth Yosemite reaches roughly 9,917 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 KMMH on an average day?
It swings with the seasons: from roughly 6,846 ft at the coldest month's average temperature to about 9,049 ft at the warmest month's — all from a constant field elevation of 7,135 ft. The month-by-month table above carries the full year.
What is the field elevation of Mammoth Yosemite?
7,135 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMMH (ICAO) / MMH (FAA), in Mammoth Lakes, California.