Redding, California · field elev 723 ft
Density Altitude at Benton Field (O85)
Benton Field sits at 723 ft, and even a typical July afternoon (100 °F) only lifts density altitude to about 3,464 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 | 47.5 | 147 ft | 57.2 | 793 ft |
| February | 50.5 | 349 ft | 61.0 | 1,041 ft |
| March | 54.4 | 608 ft | 65.7 | 1,346 ft |
| April | 59.4 | 937 ft | 71.8 | 1,736 ft |
| May | 68.2 | 1,506 ft | 82.0 | 2,376 ft |
| June | 77.1 | 2,070 ft | 91.9 | 2,983 ft |
| July | 83.4 | 2,463 ft | 99.9 | 3,464 ft |
| August | 81.0 | 2,314 ft | 98.1 | 3,357 ft |
| September | 75.3 | 1,957 ft | 92.3 | 3,008 ft |
| October | 64.8 | 1,288 ft | 79.4 | 2,214 ft |
| November | 52.9 | 508 ft | 64.4 | 1,262 ft |
| December | 46.6 | 87 ft | 56.0 | 714 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 O85
DENSITY ALTITUDE
Field elevation 723 ft — the air behaves like 3,470 ft.
- PRESSURE ALT
- 724 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
- KRDD — Redding Regional
Redding · elev 505 ft
- O54 — Lonnie Pool Field/Weaverville
Weaverville · elev 2,350 ft
- KRBL — Red Bluff Municipal
Red Bluff · elev 352 ft
- O86 — Trinity Center
Trinity Center · elev 2,390 ft
- F62 — Hayfork
Hayfork · elev 2,334 ft
- 0O4 — Corning Municipal
Corning · elev 295 ft
- 1O6 — Dunsmuir Municipal-Mott
Dunsmuir · elev 3,261 ft
- T42 — Ruth
Ruth · elev 2,781 ft
Frequently asked questions
How high does density altitude get at O85 in summer?
On a typical July afternoon — around 100 °F at the nearest NOAA normals station — density altitude at Benton Field reaches roughly 3,464 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 O85 on an average day?
It swings with the seasons: from roughly 87 ft at the coldest month's average temperature to about 2,463 ft at the warmest month's — all from a constant field elevation of 723 ft. The month-by-month table above carries the full year.
What is the field elevation of Benton Field?
723 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is O85 (FAA), in Redding, California.