Monument, Oregon · field elev 2,323 ft
Density Altitude at Monument Municipal (12S)
From a field elevation of 2,323 ft, a typical August afternoon at Monument Municipal (94 °F) raises density altitude to about 5,028 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 | 33.6 | 1,191 ft | 44.0 | 1,896 ft |
| February | 37.5 | 1,457 ft | 50.3 | 2,314 ft |
| March | 44.1 | 1,902 ft | 58.4 | 2,843 ft |
| April | 50.0 | 2,294 ft | 65.4 | 3,292 ft |
| May | 57.8 | 2,804 ft | 74.2 | 3,846 ft |
| June | 64.3 | 3,222 ft | 81.4 | 4,290 ft |
| July | 72.3 | 3,727 ft | 93.4 | 5,016 ft ▲ |
| August | 71.8 | 3,696 ft | 93.6 | 5,028 ft ▲ |
| September | 62.7 | 3,120 ft | 83.7 | 4,431 ft |
| October | 50.6 | 2,334 ft | 67.4 | 3,419 ft |
| November | 40.1 | 1,633 ft | 52.6 | 2,465 ft |
| December | 33.2 | 1,163 ft | 43.0 | 1,829 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 12S
DENSITY ALTITUDE caution
Field elevation 2,323 ft — the air behaves like 5,052 ft.
- PRESSURE ALT
- 2,324 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
- KGCD — Grant County Regional/Ogilvie Field
John Day · elev 3,703 ft
- 9S9 — Lexington
Lexington · elev 1,635 ft
- 3S9 — Condon State Pauling Field
Condon · elev 2,911 ft
- KPDT — Eastern Oregon Regional At Pendleton
Pendleton · elev 1,494 ft
- KHRI — Hermiston Municipal
Hermiston · elev 644 ft
- M50 — Boardman
Boardman · elev 396 ft
- 1S8 — Arlington Municipal
Arlington · elev 890 ft
- KLGD — La Grande/Union County
La Grande · elev 2,718 ft
Frequently asked questions
How high does density altitude get at 12S in summer?
On a typical August afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Monument Municipal reaches roughly 5,028 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 12S on an average day?
It swings with the seasons: from roughly 1,163 ft at the coldest month's average temperature to about 3,727 ft at the warmest month's — all from a constant field elevation of 2,323 ft. The month-by-month table above carries the full year.
What is the field elevation of Monument Municipal?
2,323 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 12S (FAA), in Monument, Oregon.