Lakeside, Oregon · field elev 20 ft
Density Altitude at Lakeside Municipal (9S3)
Lakeside Municipal sits at 20 ft, and even a typical September afternoon (71 °F) only lifts density altitude to about 809 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 | 46.6 | −786 ft | 53.9 | −295 ft |
| February | 47.0 | −759 ft | 55.3 | −202 ft |
| March | 48.0 | −691 ft | 56.4 | −129 ft |
| April | 50.4 | −529 ft | 58.9 | 36 ft |
| May | 54.2 | −275 ft | 62.5 | 272 ft |
| June | 57.5 | −56 ft | 65.6 | 474 ft |
| July | 60.7 | 155 ft | 69.6 | 732 ft |
| August | 61.1 | 181 ft | 70.4 | 783 ft |
| September | 60.4 | 135 ft | 70.8 | 809 ft |
| October | 55.2 | −208 ft | 64.8 | 422 ft |
| November | 49.9 | −563 ft | 57.7 | −43 ft |
| December | 46.1 | −820 ft | 52.8 | −368 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 9S3
DENSITY ALTITUDE
Field elevation 20 ft — the air behaves like 822 ft.
- PRESSURE ALT
- 21 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
- KOTH — Southwest Oregon Regional
North Bend · elev 17 ft
- 6S2 — Florence Municipal
Florence · elev 51 ft
- S05 — Bandon State
Bandon · elev 122 ft
- 5S1 — George Felt
Roseburg · elev 428 ft
- KRBG — Roseburg Regional
Roseburg · elev 533 ft
- 6S6 — Powers
Powers · elev 326 ft
- 5S6 — Cape Blanco State
Sixes · elev 202 ft
- R33 — Wakonda Beach State
Waldport · elev 41 ft
Frequently asked questions
How high does density altitude get at 9S3 in summer?
On a typical September afternoon — around 71 °F at the nearest NOAA normals station — density altitude at Lakeside Municipal reaches roughly 809 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 9S3 on an average day?
It swings with the seasons: from roughly −820 ft at the coldest month's average temperature to about 181 ft at the warmest month's — all from a constant field elevation of 20 ft. The month-by-month table above carries the full year.
What is the field elevation of Lakeside Municipal?
20 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 9S3 (FAA), in Lakeside, Oregon.