Avoca, Michigan · field elev 726 ft
Density Altitude at Avoca (39G)
Avoca sits at 726 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,349 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 | 20.8 | −1,706 ft | 28.9 | −1,130 ft |
| February | 22.2 | −1,606 ft | 32.4 | −884 ft |
| March | 31.4 | −954 ft | 41.5 | −256 ft |
| April | 42.8 | −167 ft | 54.8 | 638 ft |
| May | 53.8 | 572 ft | 65.8 | 1,356 ft |
| June | 64.7 | 1,285 ft | 77.6 | 2,105 ft |
| July | 68.9 | 1,555 ft | 81.5 | 2,349 ft |
| August | 67.0 | 1,433 ft | 79.7 | 2,237 ft |
| September | 60.3 | 999 ft | 73.4 | 1,841 ft |
| October | 48.6 | 225 ft | 59.9 | 973 ft |
| November | 36.9 | −571 ft | 46.0 | 50 ft |
| December | 27.5 | −1,228 ft | 35.0 | −703 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 39G
DENSITY ALTITUDE
Field elevation 726 ft — the air behaves like 2,380 ft.
- PRESSURE ALT
- 727 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 Michigan fields
- 2E2 — Sharpe'S Strip
Emmett · elev 781 ft
- D20 — Yale
Yale · elev 815 ft
- KPHN — St Clair County International
Port Huron · elev 650 ft
- 4Y8 — Para Field
Yale · elev 800 ft
- D99 — Robertson Field
Richmond · elev 650 ft
- 55G — Arnold Field
Croswell · elev 784 ft
- 55D — Burgess Field
Brown City · elev 827 ft
- 76G — Marine City
Marine City · elev 614 ft
Frequently asked questions
How high does density altitude get at 39G in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Avoca reaches roughly 2,349 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 39G on an average day?
It swings with the seasons: from roughly −1,706 ft at the coldest month's average temperature to about 1,555 ft at the warmest month's — all from a constant field elevation of 726 ft. The month-by-month table above carries the full year.
What is the field elevation of Avoca?
726 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 39G (FAA), in Avoca, Michigan.