Schellville/Sonoma, California · field elev 16 ft
Density Altitude at Sonoma Valley (0Q3)
Sonoma Valley sits at 16 ft, and even a typical August afternoon (86 °F) only lifts density altitude to about 1,767 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 47.7 | −716 ft | 57.0 | −94 ft |
| February | 50.8 | −507 ft | 61.6 | 209 ft |
| March | 53.7 | −313 ft | 65.4 | 456 ft |
| April | 56.7 | −114 ft | 69.2 | 702 ft |
| May | 61.6 | 209 ft | 75.3 | 1,091 ft |
| June | 67.1 | 566 ft | 82.8 | 1,562 ft |
| July | 69.7 | 734 ft | 86.0 | 1,761 ft |
| August | 69.6 | 727 ft | 86.1 | 1,767 ft |
| September | 68.0 | 624 ft | 84.8 | 1,686 ft |
| October | 62.5 | 267 ft | 77.5 | 1,230 ft |
| November | 53.5 | −327 ft | 65.2 | 443 ft |
| December | 47.4 | −737 ft | 56.7 | −114 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 0Q3
DENSITY ALTITUDE
Field elevation 16 ft — the air behaves like 1,761 ft.
- PRESSURE ALT
- 17 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
- 0Q9 — Sonoma Skypark
Sonoma · elev 29 ft
- KDVO — Gnoss Field
Novato · elev 4 ft
- O69 — Petaluma Municipal
Petaluma · elev 90 ft
- KAPC — Napa County
Napa · elev 36 ft
- 2O3 — Angwin-Parrett Field
Angwin · elev 1,875 ft
- KCCR — Buchanan Field
Concord · elev 26 ft
- KSTS — Charles M Schulz/Sonoma County
Santa Rosa · elev 129 ft
- KVCB — Nut Tree
Vacaville · elev 117 ft
Frequently asked questions
How high does density altitude get at 0Q3 in summer?
On a typical August afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Sonoma Valley reaches roughly 1,767 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 0Q3 on an average day?
It swings with the seasons: from roughly −737 ft at the coldest month's average temperature to about 734 ft at the warmest month's — all from a constant field elevation of 16 ft. The month-by-month table above carries the full year.
What is the field elevation of Sonoma Valley?
16 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 0Q3 (FAA), in Schellville/Sonoma, California.