Roseburg, Oregon · field elev 533 ft
Density Altitude at Roseburg Regional (KRBG)
Roseburg Regional sits at 533 ft, and even a typical August afternoon (86 °F) only lifts density altitude to about 2,385 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 | 43.6 | −352 ft | 50.1 | 86 ft |
| February | 45.7 | −210 ft | 53.7 | 327 ft |
| March | 49.2 | 26 ft | 58.7 | 656 ft |
| April | 52.9 | 273 ft | 63.3 | 957 ft |
| May | 59.5 | 709 ft | 71.0 | 1,452 ft |
| June | 64.6 | 1,041 ft | 76.7 | 1,813 ft |
| July | 71.6 | 1,490 ft | 85.8 | 2,379 ft |
| August | 71.5 | 1,484 ft | 85.9 | 2,385 ft |
| September | 66.1 | 1,138 ft | 80.1 | 2,026 ft |
| October | 56.1 | 485 ft | 66.9 | 1,189 ft |
| November | 47.4 | −95 ft | 54.2 | 360 ft |
| December | 42.5 | −427 ft | 48.2 | −41 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 KRBG
DENSITY ALTITUDE
Field elevation 533 ft — the air behaves like 2,391 ft.
- PRESSURE ALT
- 534 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
- 5S1 — George Felt
Roseburg · elev 428 ft
- 16S — Myrtle Creek Municipal
Myrtle Creek · elev 619 ft
- 61S — Cottage Grove State
Cottage Grove · elev 645 ft
- 6S6 — Powers
Powers · elev 326 ft
- KOTH — Southwest Oregon Regional
North Bend · elev 17 ft
- 3S6 — Toketee State
Clearwater · elev 3,361 ft
- 9S3 — Lakeside Municipal
Lakeside · elev 20 ft
- 3S8 — Grants Pass
Grants Pass · elev 1,130 ft
Frequently asked questions
How high does density altitude get at KRBG in summer?
On a typical August afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Roseburg Regional reaches roughly 2,385 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 KRBG on an average day?
It swings with the seasons: from roughly −427 ft at the coldest month's average temperature to about 1,490 ft at the warmest month's — all from a constant field elevation of 533 ft. The month-by-month table above carries the full year.
What is the field elevation of Roseburg Regional?
533 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRBG (ICAO) / RBG (FAA), in Roseburg, Oregon.