Hillsboro, North Dakota · field elev 906 ft
Density Altitude at Hillsboro Municipal (3H4)
Hillsboro Municipal sits at 906 ft, and even a typical July afternoon (81 °F) only lifts density altitude to about 2,556 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 | 9.4 | −2,311 ft | 17.9 | −1,689 ft |
| February | 13.3 | −2,024 ft | 22.5 | −1,358 ft |
| March | 27.7 | −989 ft | 35.9 | −416 ft |
| April | 43.4 | 98 ft | 53.0 | 741 ft |
| May | 56.7 | 986 ft | 67.7 | 1,699 ft |
| June | 67.1 | 1,661 ft | 77.0 | 2,288 ft |
| July | 71.2 | 1,922 ft | 81.3 | 2,556 ft |
| August | 69.3 | 1,801 ft | 80.2 | 2,488 ft |
| September | 60.5 | 1,234 ft | 71.3 | 1,929 ft |
| October | 46.0 | 273 ft | 55.2 | 887 ft |
| November | 30.3 | −806 ft | 38.2 | −258 ft |
| December | 16.6 | −1,783 ft | 23.7 | −1,273 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 3H4
DENSITY ALTITUDE
Field elevation 906 ft — the air behaves like 2,537 ft.
- PRESSURE ALT
- 907 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
- D56 — Mayville Municipal
Mayville · elev 977 ft
- 1A2 — Arthur
Arthur · elev 973 ft
- 64G — Page Regional
Page · elev 1,218 ft
- D54 — West Fargo Municipal
Fargo · elev 896 ft
- KFAR — Hector International
Fargo · elev 901 ft
- 4V4 — Northwood Municipal/Vince Field
Northwood · elev 1,119 ft
- 5N8 — Casselton Robert Miller Regional
Casselton · elev 933 ft
- KGFK — Grand Forks International
Grand Forks · elev 845 ft
Frequently asked questions
How high does density altitude get at 3H4 in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Hillsboro Municipal reaches roughly 2,556 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 3H4 on an average day?
It swings with the seasons: from roughly −2,311 ft at the coldest month's average temperature to about 1,922 ft at the warmest month's — all from a constant field elevation of 906 ft. The month-by-month table above carries the full year.
What is the field elevation of Hillsboro Municipal?
906 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3H4 (FAA), in Hillsboro, North Dakota.