Blue Earth, Minnesota · field elev 1,107 ft
Density Altitude at Blue Earth Municipal (KSBU)
Blue Earth Municipal sits at 1,107 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,857 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 | 14.4 | −1,691 ft | 23.2 | −1,056 ft |
| February | 19.0 | −1,357 ft | 27.8 | −730 ft |
| March | 31.8 | −450 ft | 40.4 | 143 ft |
| April | 45.9 | 516 ft | 56.1 | 1,194 ft |
| May | 58.5 | 1,351 ft | 68.8 | 2,016 ft |
| June | 68.9 | 2,022 ft | 78.8 | 2,646 ft |
| July | 72.3 | 2,238 ft | 82.2 | 2,857 ft |
| August | 69.8 | 2,080 ft | 79.7 | 2,702 ft |
| September | 62.6 | 1,618 ft | 73.7 | 2,327 ft |
| October | 48.9 | 717 ft | 59.9 | 1,443 ft |
| November | 33.9 | −304 ft | 42.7 | 300 ft |
| December | 20.7 | −1,235 ft | 28.7 | −667 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 KSBU
DENSITY ALTITUDE
Field elevation 1,107 ft — the air behaves like 2,845 ft.
- PRESSURE ALT
- 1,108 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
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- KFRM — Fairmont Municipal
Fairmont · elev 1,162 ft
- 68Y — Wells Municipal
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- KJYG — St James Municipal
St James · elev 1,068 ft
- KAEL — Albert Lea Municipal
Albert Lea · elev 1,261 ft
- KACQ — Waseca Municipal/Maynard Richard Stensrud Field
Waseca · elev 1,127 ft
- KMKT — Mankato Regional
Mankato · elev 1,021 ft
- KMJQ — Jackson Municipal
Jackson · elev 1,446 ft
- KULM — New Ulm Municipal
New Ulm · elev 1,011 ft
Frequently asked questions
How high does density altitude get at KSBU in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Blue Earth Municipal reaches roughly 2,857 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 KSBU on an average day?
It swings with the seasons: from roughly −1,691 ft at the coldest month's average temperature to about 2,238 ft at the warmest month's — all from a constant field elevation of 1,107 ft. The month-by-month table above carries the full year.
What is the field elevation of Blue Earth Municipal?
1,107 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSBU (ICAO) / SBU (FAA), in Blue Earth, Minnesota.