Weed, California · field elev 2,943 ft
Density Altitude at Weed (O46)
From a field elevation of 2,943 ft, a typical July afternoon at Weed (93 °F) raises density altitude to about 5,743 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 | 36.7 | 2,173 ft | 46.1 | 2,803 ft |
| February | 40.4 | 2,423 ft | 51.7 | 3,171 ft |
| March | 45.2 | 2,743 ft | 58.1 | 3,586 ft |
| April | 50.4 | 3,086 ft | 64.3 | 3,982 ft |
| May | 58.6 | 3,618 ft | 73.9 | 4,584 ft |
| June | 65.8 | 4,077 ft | 82.9 | 5,137 ft ▲ |
| July | 74.2 | 4,603 ft | 93.0 | 5,743 ft ▲ |
| August | 73.0 | 4,528 ft | 92.2 | 5,696 ft ▲ |
| September | 65.7 | 4,071 ft | 84.4 | 5,228 ft ▲ |
| October | 53.7 | 3,302 ft | 69.7 | 4,323 ft |
| November | 42.5 | 2,563 ft | 53.9 | 3,315 ft |
| December | 36.0 | 2,125 ft | 44.9 | 2,723 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 O46
DENSITY ALTITUDE caution
Field elevation 2,943 ft — the air behaves like 5,743 ft.
- PRESSURE ALT
- 2,945 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
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- 36S — Happy Camp
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Frequently asked questions
How high does density altitude get at O46 in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Weed reaches roughly 5,743 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 O46 on an average day?
It swings with the seasons: from roughly 2,125 ft at the coldest month's average temperature to about 4,603 ft at the warmest month's — all from a constant field elevation of 2,943 ft. The month-by-month table above carries the full year.
What is the field elevation of Weed?
2,943 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is O46 (FAA), in Weed, California.