Roseau, Minnesota · field elev 1,060 ft
Density Altitude at Roseau Municipal/Rudy Billberg Field (KROX)
Roseau Municipal/Rudy Billberg Field sits at 1,060 ft, and even a typical July afternoon (77 °F) only lifts density altitude to about 2,470 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 | 2.6 | −2,624 ft | 13.2 | −1,837 ft |
| February | 7.0 | −2,295 ft | 18.9 | −1,423 ft |
| March | 21.0 | −1,272 ft | 32.5 | −460 ft |
| April | 36.1 | −210 ft | 47.6 | 572 ft |
| May | 50.9 | 792 ft | 62.2 | 1,534 ft |
| June | 61.4 | 1,482 ft | 72.0 | 2,162 ft |
| July | 65.8 | 1,766 ft | 76.9 | 2,470 ft |
| August | 63.8 | 1,638 ft | 75.4 | 2,376 ft |
| September | 54.7 | 1,044 ft | 66.3 | 1,799 ft |
| October | 40.9 | 119 ft | 50.8 | 786 ft |
| November | 25.1 | −980 ft | 33.5 | −390 ft |
| December | 10.3 | −2,050 ft | 19.2 | −1,402 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 KROX
DENSITY ALTITUDE
Field elevation 1,060 ft — the air behaves like 2,476 ft.
- PRESSURE ALT
- 1,061 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 Minnesota fields
- KRRT — Warroad International Meml
Warroad · elev 1,076 ft
- 3G2 — Grygla Municipal - Mel Wilkens Field
Grygla · elev 1,177 ft
- 23D — Karlstad Municipal
Karlstad · elev 1,025 ft
- KBDE — Baudette International
Baudette · elev 1,085 ft
- KHCO — Hallock Municipal
Hallock · elev 820 ft
- KTVF — Thief River Falls Regional
Thief River Falls · elev 1,119 ft
- D41 — Stephen Municipal
Stephen · elev 830 ft
- D37 — Warren Municipal
Warren · elev 888 ft
Frequently asked questions
How high does density altitude get at KROX in summer?
On a typical July afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Roseau Municipal/Rudy Billberg Field reaches roughly 2,470 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 KROX on an average day?
It swings with the seasons: from roughly −2,624 ft at the coldest month's average temperature to about 1,766 ft at the warmest month's — all from a constant field elevation of 1,060 ft. The month-by-month table above carries the full year.
What is the field elevation of Roseau Municipal/Rudy Billberg Field?
1,060 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KROX (ICAO) / ROX (FAA), in Roseau, Minnesota.