Rio Vista, California · field elev 23 ft
Density Altitude at Rio Vista Municipal (O88)
Rio Vista Municipal sits at 23 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,101 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 | 48.0 | −687 ft | 55.7 | −172 ft |
| February | 52.3 | −398 ft | 60.8 | 165 ft |
| March | 56.5 | −119 ft | 66.5 | 536 ft |
| April | 60.8 | 165 ft | 72.1 | 896 ft |
| May | 66.6 | 543 ft | 79.0 | 1,333 ft |
| June | 72.6 | 928 ft | 86.3 | 1,788 ft |
| July | 76.0 | 1,144 ft | 91.4 | 2,101 ft |
| August | 75.2 | 1,093 ft | 90.2 | 2,028 ft |
| September | 72.7 | 934 ft | 86.7 | 1,813 ft |
| October | 65.9 | 497 ft | 77.5 | 1,239 ft |
| November | 55.4 | −191 ft | 64.6 | 413 ft |
| December | 48.1 | −681 ft | 55.8 | −165 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 O88
DENSITY ALTITUDE
Field elevation 23 ft — the air behaves like 2,077 ft.
- PRESSURE ALT
- 24 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
- F72 — Franklin Field
Franklin · elev 23 ft
- KVCB — Nut Tree
Vacaville · elev 117 ft
- O20 — Kingdon Airpark
Lodi · elev 18 ft
- L53 — Lodi Airpark
Lodi · elev 25 ft
- 1O3 — Lodi
Lodi · elev 60 ft
- KEDU — University
Davis · elev 70 ft
- KCCR — Buchanan Field
Concord · elev 26 ft
- KSAC — Sacramento Exec
Sacramento · elev 23 ft
Frequently asked questions
How high does density altitude get at O88 in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Rio Vista Municipal reaches roughly 2,101 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 O88 on an average day?
It swings with the seasons: from roughly −687 ft at the coldest month's average temperature to about 1,144 ft at the warmest month's — all from a constant field elevation of 23 ft. The month-by-month table above carries the full year.
What is the field elevation of Rio Vista Municipal?
23 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is O88 (FAA), in Rio Vista, California.