Hallock, Minnesota · field elev 820 ft
Density Altitude at Hallock Municipal (KHCO)
Hallock Municipal sits at 820 ft, and even a typical July afternoon (79 °F) only lifts density altitude to about 2,333 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 | 4.5 | −2,785 ft | 13.1 | −2,147 ft |
| February | 8.6 | −2,479 ft | 17.7 | −1,812 ft |
| March | 23.7 | −1,380 ft | 31.6 | −822 ft |
| April | 40.1 | −234 ft | 50.1 | 442 ft |
| May | 54.5 | 734 ft | 66.3 | 1,504 ft |
| June | 64.7 | 1,400 ft | 75.8 | 2,107 ft |
| July | 68.4 | 1,638 ft | 79.4 | 2,333 ft |
| August | 67.0 | 1,548 ft | 78.6 | 2,283 ft |
| September | 57.2 | 912 ft | 68.7 | 1,657 ft |
| October | 42.6 | −64 ft | 51.7 | 549 ft |
| November | 26.2 | −1,203 ft | 33.9 | −662 ft |
| December | 11.8 | −2,243 ft | 19.0 | −1,718 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 KHCO
DENSITY ALTITUDE
Field elevation 820 ft — the air behaves like 2,308 ft.
- PRESSURE ALT
- 821 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
- D41 — Stephen Municipal
Stephen · elev 830 ft
- 23D — Karlstad Municipal
Karlstad · elev 1,025 ft
- D37 — Warren Municipal
Warren · elev 888 ft
- KROX — Roseau Municipal/Rudy Billberg Field
Roseau · elev 1,060 ft
- KTVF — Thief River Falls Regional
Thief River Falls · elev 1,119 ft
- KCKN — Crookston Municipal/Kirkwood Field
Crookston · elev 897 ft
- 3G2 — Grygla Municipal - Mel Wilkens Field
Grygla · elev 1,177 ft
- D81 — Red Lake Falls Municipal
Red Lake Falls · elev 1,060 ft
Frequently asked questions
How high does density altitude get at KHCO in summer?
On a typical July afternoon — around 79 °F at the nearest NOAA normals station — density altitude at Hallock Municipal reaches roughly 2,333 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 KHCO on an average day?
It swings with the seasons: from roughly −2,785 ft at the coldest month's average temperature to about 1,638 ft at the warmest month's — all from a constant field elevation of 820 ft. The month-by-month table above carries the full year.
What is the field elevation of Hallock Municipal?
820 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHCO (ICAO) / HCO (FAA), in Hallock, Minnesota.