Madras, Oregon · field elev 2,438 ft
Density Altitude at Madras Municipal (S33)
Madras Municipal sits at 2,438 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 4,777 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 | 33.7 | 1,341 ft | 43.0 | 1,971 ft |
| February | 35.5 | 1,464 ft | 45.9 | 2,165 ft |
| March | 41.2 | 1,850 ft | 54.0 | 2,699 ft |
| April | 45.9 | 2,165 ft | 60.6 | 3,126 ft |
| May | 54.0 | 2,699 ft | 69.4 | 3,686 ft |
| June | 60.6 | 3,126 ft | 76.9 | 4,154 ft |
| July | 68.3 | 3,616 ft | 87.1 | 4,777 ft |
| August | 68.0 | 3,598 ft | 86.4 | 4,735 ft |
| September | 60.4 | 3,113 ft | 77.6 | 4,197 ft |
| October | 49.0 | 2,370 ft | 63.0 | 3,280 ft |
| November | 38.8 | 1,688 ft | 49.3 | 2,390 ft |
| December | 32.3 | 1,244 ft | 41.3 | 1,857 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 S33
DENSITY ALTITUDE
Field elevation 2,438 ft — the air behaves like 4,771 ft.
- PRESSURE ALT
- 2,439 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
- 5S5 — Lake Billy Chinook
Culver · elev 2,695 ft
- KRDM — Roberts Field/Redmond Municipal
Redmond · elev 3,082 ft
- S39 — Prineville
Prineville · elev 3,251 ft
- 6K5 — Sisters Eagle Air
Sisters · elev 3,168 ft
- KBDN — Bend Municipal
Bend · elev 3,459 ft
- 8S3 — Santiam Junction State
Santiam Junction · elev 3,780 ft
- S21 — Sunriver
Sunriver · elev 4,164 ft
- 00S — Mc Kenzie Bridge State
Mc Kenzie Bridge · elev 1,620 ft
Frequently asked questions
How high does density altitude get at S33 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Madras Municipal reaches roughly 4,777 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 S33 on an average day?
It swings with the seasons: from roughly 1,244 ft at the coldest month's average temperature to about 3,616 ft at the warmest month's — all from a constant field elevation of 2,438 ft. The month-by-month table above carries the full year.
What is the field elevation of Madras Municipal?
2,438 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S33 (FAA), in Madras, Oregon.