St James, Minnesota · field elev 1,068 ft
Density Altitude at St James Municipal (KJYG)
St James Municipal sits at 1,068 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,847 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 | 14.3 | −1,747 ft | 23.5 | −1,084 ft |
| February | 19.1 | −1,399 ft | 28.2 | −751 ft |
| March | 31.3 | −534 ft | 40.4 | 95 ft |
| April | 45.4 | 434 ft | 56.2 | 1,153 ft |
| May | 58.4 | 1,297 ft | 69.3 | 2,000 ft |
| June | 68.9 | 1,975 ft | 79.5 | 2,642 ft |
| July | 72.4 | 2,197 ft | 82.8 | 2,847 ft |
| August | 69.7 | 2,026 ft | 80.4 | 2,698 ft |
| September | 62.4 | 1,557 ft | 74.2 | 2,310 ft |
| October | 48.6 | 649 ft | 60.0 | 1,401 ft |
| November | 33.9 | −353 ft | 43.1 | 278 ft |
| December | 20.5 | −1,298 ft | 29.0 | −695 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 KJYG
DENSITY ALTITUDE
Field elevation 1,068 ft — the air behaves like 2,859 ft.
- PRESSURE ALT
- 1,069 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
- Y58 — Sleepy Eye Municipal
Sleepy Eye · elev 1,006 ft
- KULM — New Ulm Municipal
New Ulm · elev 1,011 ft
- KFRM — Fairmont Municipal
Fairmont · elev 1,162 ft
- D42 — Springfield Municipal
Springfield · elev 1,073 ft
- KMWM — Windom Municipal
Windom · elev 1,411 ft
- KMJQ — Jackson Municipal
Jackson · elev 1,446 ft
- KSBU — Blue Earth Municipal
Blue Earth · elev 1,107 ft
- KMKT — Mankato Regional
Mankato · elev 1,021 ft
Frequently asked questions
How high does density altitude get at KJYG in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at St James Municipal reaches roughly 2,847 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 KJYG on an average day?
It swings with the seasons: from roughly −1,747 ft at the coldest month's average temperature to about 2,197 ft at the warmest month's — all from a constant field elevation of 1,068 ft. The month-by-month table above carries the full year.
What is the field elevation of St James Municipal?
1,068 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJYG (ICAO) / JYG (FAA), in St James, Minnesota.