Duluth, Minnesota · field elev 1,428 ft
Density Altitude at Duluth International (KDLH)
Duluth International sits at 1,428 ft, and even a typical July afternoon (78 °F) only lifts density altitude to about 2,970 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 | 11.2 | −1,520 ft | 19.9 | −889 ft |
| February | 15.4 | −1,214 ft | 24.8 | −540 ft |
| March | 27.0 | −385 ft | 36.2 | 255 ft |
| April | 39.5 | 481 ft | 49.2 | 1,135 ft |
| May | 52.0 | 1,321 ft | 63.0 | 2,039 ft |
| June | 61.2 | 1,923 ft | 72.1 | 2,619 ft |
| July | 67.0 | 2,295 ft | 77.7 | 2,970 ft |
| August | 65.5 | 2,199 ft | 75.8 | 2,851 ft |
| September | 57.2 | 1,662 ft | 67.2 | 2,308 ft |
| October | 44.1 | 793 ft | 52.7 | 1,367 ft |
| November | 29.8 | −189 ft | 37.1 | 317 ft |
| December | 17.1 | −1,091 ft | 24.7 | −548 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 KDLH
DENSITY ALTITUDE
Field elevation 1,428 ft — the air behaves like 2,989 ft.
- PRESSURE ALT
- 1,429 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
- KDYT — Sky Harbor
Duluth · elev 609 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 KDLH in summer?
On a typical July afternoon — around 78 °F at the nearest NOAA normals station — density altitude at Duluth International reaches roughly 2,970 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 KDLH on an average day?
It swings with the seasons: from roughly −1,520 ft at the coldest month's average temperature to about 2,295 ft at the warmest month's — all from a constant field elevation of 1,428 ft. The month-by-month table above carries the full year.
What is the field elevation of Duluth International?
1,428 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KDLH (ICAO) / DLH (FAA), in Duluth, Minnesota.