Duluth, Minnesota · field elev 609 ft
Density Altitude at Sky Harbor (KDYT)
Sky Harbor sits at 609 ft, and even a typical July afternoon (76 °F) only lifts density altitude to about 1,868 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 | 14.1 | −2,340 ft | 22.5 | −1,731 ft |
| February | 18.0 | −2,055 ft | 26.9 | −1,417 ft |
| March | 28.5 | −1,304 ft | 36.1 | −773 ft |
| April | 38.9 | −579 ft | 46.0 | −95 ft |
| May | 49.1 | 114 ft | 57.4 | 665 ft |
| June | 58.2 | 717 ft | 67.0 | 1,289 ft |
| July | 67.1 | 1,296 ft | 76.1 | 1,868 ft |
| August | 66.4 | 1,251 ft | 74.8 | 1,786 ft |
| September | 58.4 | 731 ft | 66.6 | 1,263 ft |
| October | 45.8 | −109 ft | 53.0 | 374 ft |
| November | 32.4 | −1,030 ft | 39.1 | −566 ft |
| December | 20.2 | −1,896 ft | 27.3 | −1,389 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 KDYT
DENSITY ALTITUDE
Field elevation 609 ft — the air behaves like 1,862 ft.
- PRESSURE ALT
- 610 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
- KDLH — Duluth International
Duluth · elev 1,428 ft
- KCOQ — Cloquet/Carlton County
Cloquet · elev 1,279 ft
- KTWM — Richard B Helgeson
Two Harbors · elev 1,073 ft
- KMZH — Moose Lake Carlton County
Moose Lake · elev 1,076 ft
- KEVM — Eveleth/Virginia Municipal
Eveleth · elev 1,376 ft
- KHIB — Range Regional
Hibbing · elev 1,354 ft
- KHZX — Isedor Iverson
Mc Gregor · elev 1,228 ft
- 04W — Field Of Dreams
Hinckley · elev 1,021 ft
Frequently asked questions
How high does density altitude get at KDYT in summer?
On a typical July afternoon — around 76 °F at the nearest NOAA normals station — density altitude at Sky Harbor reaches roughly 1,868 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 KDYT on an average day?
It swings with the seasons: from roughly −2,340 ft at the coldest month's average temperature to about 1,296 ft at the warmest month's — all from a constant field elevation of 609 ft. The month-by-month table above carries the full year.
What is the field elevation of Sky Harbor?
609 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KDYT (ICAO) / DYT (FAA), in Duluth, Minnesota.