Grass Valley, California · field elev 3,158 ft
Density Altitude at Nevada County (KGOO)
From a field elevation of 3,158 ft, a typical July afternoon at Nevada County (87 °F) raises density altitude to about 5,657 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 | 43.0 | 2,863 ft | 50.6 | 3,365 ft |
| February | 44.0 | 2,929 ft | 52.8 | 3,508 ft |
| March | 47.1 | 3,135 ft | 57.0 | 3,780 ft |
| April | 51.2 | 3,404 ft | 62.5 | 4,132 ft |
| May | 58.9 | 3,902 ft | 70.6 | 4,642 ft |
| June | 66.6 | 4,391 ft | 79.4 | 5,185 ft ▲ |
| July | 73.5 | 4,822 ft | 87.2 | 5,657 ft ▲ |
| August | 72.9 | 4,785 ft | 86.7 | 5,627 ft ▲ |
| September | 68.5 | 4,510 ft | 81.8 | 5,331 ft ▲ |
| October | 59.0 | 3,908 ft | 70.6 | 4,642 ft |
| November | 48.3 | 3,214 ft | 57.0 | 3,780 ft |
| December | 41.5 | 2,763 ft | 48.3 | 3,214 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 KGOO
DENSITY ALTITUDE caution
Field elevation 3,158 ft — the air behaves like 5,645 ft.
- PRESSURE ALT
- 3,160 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
- KBLU — Blue Canyon - Nyack
Emigrant Gap · elev 5,284 ft
- KAUN — Auburn Municipal
Auburn · elev 1,538 ft
- E36 — Georgetown
Georgetown · elev 2,625 ft
- KLHM — Lincoln Regional/Karl Harder Field
Lincoln · elev 121 ft
- KMYV — Yuba County
Marysville · elev 64 ft
- O52 — Sutter County
Yuba City · elev 60 ft
- KPVF — Placerville
Placerville · elev 2,586 ft
- O61 — Cameron Park
Cameron Park · elev 1,287 ft
Frequently asked questions
How high does density altitude get at KGOO in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Nevada County reaches roughly 5,657 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 KGOO on an average day?
It swings with the seasons: from roughly 2,763 ft at the coldest month's average temperature to about 4,822 ft at the warmest month's — all from a constant field elevation of 3,158 ft. The month-by-month table above carries the full year.
What is the field elevation of Nevada County?
3,158 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGOO (ICAO) / GOO (FAA), in Grass Valley, California.