Fort Yates, North Dakota · field elev 1,634 ft
Density Altitude at Standing Rock (Y27)
Standing Rock sits at 1,634 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 3,696 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 | 13.5 | −1,093 ft | 24.1 | −332 ft |
| February | 18.2 | −753 ft | 29.0 | 13 ft |
| March | 30.6 | 124 ft | 41.9 | 900 ft |
| April | 44.7 | 1,089 ft | 57.8 | 1,956 ft |
| May | 56.9 | 1,897 ft | 69.8 | 2,726 ft |
| June | 66.8 | 2,535 ft | 79.0 | 3,302 ft |
| July | 72.6 | 2,903 ft | 85.4 | 3,696 ft |
| August | 70.9 | 2,796 ft | 84.3 | 3,629 ft |
| September | 61.5 | 2,195 ft | 75.2 | 3,066 ft |
| October | 46.3 | 1,196 ft | 58.3 | 1,988 ft |
| November | 31.0 | 152 ft | 41.3 | 859 ft |
| December | 18.6 | −724 ft | 28.3 | −36 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 Y27
DENSITY ALTITUDE
Field elevation 1,634 ft — the air behaves like 3,672 ft.
- PRESSURE ALT
- 1,635 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 North Dakota fields
- 7L2 — Linton Municipal
Linton · elev 1,779 ft
- 6H8 — Hazelton Municipal
Hazelton · elev 2,015 ft
- KBIS — Bismarck Municipal
Bismarck · elev 1,661 ft
- Y19 — Mandan Regional/Lawler Field
Mandan · elev 1,944 ft
- 5B5 — Napoleon Municipal
Napoleon · elev 1,985 ft
- 6L5 — Wishek Municipal
Wishek · elev 2,043 ft
- KASY — Ashley Municipal
Ashley · elev 2,034 ft
- Y71 — Elgin Municipal
Elgin · elev 2,355 ft
Frequently asked questions
How high does density altitude get at Y27 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Standing Rock reaches roughly 3,696 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 Y27 on an average day?
It swings with the seasons: from roughly −1,093 ft at the coldest month's average temperature to about 2,903 ft at the warmest month's — all from a constant field elevation of 1,634 ft. The month-by-month table above carries the full year.
What is the field elevation of Standing Rock?
1,634 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is Y27 (FAA), in Fort Yates, North Dakota.