Lebanon, Oregon · field elev 349 ft
Density Altitude at Lebanon State (S30)
Lebanon State sits at 349 ft, and even a typical August afternoon (86 °F) only lifts density altitude to about 2,155 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 | 42.8 | −636 ft | 48.8 | −229 ft |
| February | 44.7 | −506 ft | 52.8 | 39 ft |
| March | 48.2 | −269 ft | 57.7 | 364 ft |
| April | 51.9 | −21 ft | 62.1 | 652 ft |
| May | 58.3 | 403 ft | 69.4 | 1,124 ft |
| June | 63.8 | 762 ft | 75.5 | 1,512 ft |
| July | 70.1 | 1,168 ft | 85.0 | 2,105 ft |
| August | 70.7 | 1,207 ft | 85.8 | 2,155 ft |
| September | 64.9 | 834 ft | 79.1 | 1,738 ft |
| October | 55.0 | 185 ft | 65.1 | 847 ft |
| November | 46.9 | −357 ft | 53.8 | 106 ft |
| December | 41.7 | −711 ft | 47.3 | −330 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 S30
DENSITY ALTITUDE
Field elevation 349 ft — the air behaves like 2,167 ft.
- PRESSURE ALT
- 350 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 Oregon fields
- S12 — Albany Municipal
Albany · elev 227 ft
- KCVO — Corvallis Municipal
Corvallis · elev 250 ft
- KSLE — Mcnary Field
Salem · elev 213 ft
- 7S5 — Independence State
Independence · elev 180 ft
- 6S4 — Davis
Gates · elev 1,028 ft
- KEUG — Mahlon Sweet Field
Eugene · elev 374 ft
- 77S — Hobby Field
Creswell · elev 541 ft
- 7S9 — Lenhardt Airpark
Hubbard · elev 165 ft
Frequently asked questions
How high does density altitude get at S30 in summer?
On a typical August afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Lebanon State reaches roughly 2,155 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 S30 on an average day?
It swings with the seasons: from roughly −711 ft at the coldest month's average temperature to about 1,207 ft at the warmest month's — all from a constant field elevation of 349 ft. The month-by-month table above carries the full year.
What is the field elevation of Lebanon State?
349 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S30 (FAA), in Lebanon, Oregon.