Milnor, North Dakota · field elev 1,091 ft
Density Altitude at Milnor Municipal (4R6)
Milnor Municipal sits at 1,091 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,856 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 | 8.9 | −2,115 ft | 19.0 | −1,377 ft |
| February | 13.5 | −1,776 ft | 24.0 | −1,019 ft |
| March | 27.1 | −800 ft | 37.6 | −69 ft |
| April | 43.0 | 300 ft | 54.5 | 1,069 ft |
| May | 56.7 | 1,214 ft | 68.7 | 1,990 ft |
| June | 66.8 | 1,869 ft | 78.0 | 2,577 ft |
| July | 71.1 | 2,143 ft | 82.5 | 2,856 ft |
| August | 69.2 | 2,022 ft | 81.4 | 2,788 ft |
| September | 60.2 | 1,443 ft | 72.7 | 2,244 ft |
| October | 45.4 | 462 ft | 56.8 | 1,220 ft |
| November | 29.5 | −631 ft | 39.1 | 34 ft |
| December | 15.6 | −1,623 ft | 24.8 | −963 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 4R6
DENSITY ALTITUDE
Field elevation 1,091 ft — the air behaves like 2,887 ft.
- PRESSURE ALT
- 1,092 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
- KGWR — Gwinner/Roger Melroe Field
Gwinner · elev 1,266 ft
- 4N4 — Lidgerwood Municipal
Lidgerwood · elev 1,082 ft
- 6L3 — Lisbon Municipal
Lisbon · elev 1,240 ft
- 5N4 — Sky Haven
Enderlin · elev 1,151 ft
- 2D5 — Oakes Municipal
Oakes · elev 1,335 ft
- K74 — Robert Odegaard Field
Kindred · elev 947 ft
- KBWP — Harry Stern
Wahpeton · elev 968 ft
- 4F9 — La Moure Rott Municipal
La Moure · elev 1,310 ft
Frequently asked questions
How high does density altitude get at 4R6 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Milnor Municipal reaches roughly 2,856 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 4R6 on an average day?
It swings with the seasons: from roughly −2,115 ft at the coldest month's average temperature to about 2,143 ft at the warmest month's — all from a constant field elevation of 1,091 ft. The month-by-month table above carries the full year.
What is the field elevation of Milnor Municipal?
1,091 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4R6 (FAA), in Milnor, North Dakota.