Beaver Marsh, Oregon · field elev 4,638 ft
Density Altitude at Beaver Marsh (2S2)
From a field elevation of 4,638 ft, a typical July afternoon at Beaver Marsh (83 °F) raises density altitude to about 7,195 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 | 26.3 | 3,571 ft | 37.4 | 4,322 ft |
| February | 29.1 | 3,762 ft | 41.0 | 4,561 ft |
| March | 34.0 | 4,094 ft | 46.8 | 4,941 ft |
| April | 38.6 | 4,402 ft | 52.8 | 5,329 ft ▲ |
| May | 46.6 | 4,928 ft | 63.2 | 5,989 ft ▲ |
| June | 52.8 | 5,329 ft | 71.7 | 6,516 ft ▲ |
| July | 60.7 | 5,832 ft | 82.9 | 7,195 ft ▲ |
| August | 59.2 | 5,737 ft | 81.7 | 7,123 ft ▲ |
| September | 52.8 | 5,329 ft | 75.5 | 6,748 ft ▲ |
| October | 42.4 | 4,653 ft | 60.6 | 5,826 ft ▲ |
| November | 32.3 | 3,979 ft | 43.5 | 4,725 ft |
| December | 25.5 | 3,516 ft | 35.9 | 4,221 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 2S2
DENSITY ALTITUDE caution
Field elevation 4,638 ft — the air behaves like 7,201 ft.
- PRESSURE ALT
- 4,640 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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 Oregon fields
- 5S2 — Crescent Lake State
Crescent Lake · elev 4,820 ft
- 3S6 — Toketee State
Clearwater · elev 3,361 ft
- 45S — Silver Lake F S Strip
Silver Lake · elev 4,492 ft
- 2S7 — Chiloquin State
Chiloquin · elev 4,221 ft
- 64S — Prospect State
Prospect · elev 2,578 ft
- S21 — Sunriver
Sunriver · elev 4,164 ft
- 5S0 — Oakridge State
Oakridge · elev 1,393 ft
- 62S — Christmas Valley
Christmas Valley · elev 4,320 ft
Frequently asked questions
How high does density altitude get at 2S2 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Beaver Marsh reaches roughly 7,195 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 2S2 on an average day?
It swings with the seasons: from roughly 3,516 ft at the coldest month's average temperature to about 5,832 ft at the warmest month's — all from a constant field elevation of 4,638 ft. The month-by-month table above carries the full year.
What is the field elevation of Beaver Marsh?
4,638 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 2S2 (FAA), in Beaver Marsh, Oregon.