Mount Vernon, Ohio · field elev 1,041 ft
Density Altitude at Wynkoop (6G4)
Wynkoop sits at 1,041 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,758 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 | 24.2 | −1,068 ft | 33.1 | −442 ft |
| February | 27.2 | −855 ft | 36.8 | −186 ft |
| March | 36.4 | −213 ft | 47.1 | 515 ft |
| April | 48.1 | 582 ft | 60.5 | 1,400 ft |
| May | 58.7 | 1,283 ft | 70.7 | 2,056 ft |
| June | 67.2 | 1,833 ft | 78.5 | 2,547 ft |
| July | 70.3 | 2,031 ft | 81.9 | 2,758 ft |
| August | 68.5 | 1,916 ft | 80.2 | 2,653 ft |
| September | 61.5 | 1,465 ft | 74.4 | 2,290 ft |
| October | 50.6 | 749 ft | 63.1 | 1,569 ft |
| November | 38.6 | −62 ft | 49.4 | 669 ft |
| December | 30.2 | −644 ft | 38.3 | −83 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 6G4
DENSITY ALTITUDE
Field elevation 1,041 ft — the air behaves like 2,764 ft.
- PRESSURE ALT
- 1,042 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 Ohio fields
- 4I3 — Knox County
Mount Vernon · elev 1,192 ft
- 6CM — Chapman Meml Field
Centerburg · elev 1,180 ft
- 4I9 — Morrow County
Mount Gilead · elev 1,086 ft
- KVTA — Licking County Regional
Newark · elev 884 ft
- KGQQ — Galion Municipal
Galion · elev 1,224 ft
- 10G — Holmes County
Millersburg · elev 1,227 ft
- KMFD — Mansfield Lahm Regional
Mansfield · elev 1,297 ft
- KCMH — John Glenn Columbus International
Columbus · elev 815 ft
Frequently asked questions
How high does density altitude get at 6G4 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Wynkoop reaches roughly 2,758 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 6G4 on an average day?
It swings with the seasons: from roughly −1,068 ft at the coldest month's average temperature to about 2,031 ft at the warmest month's — all from a constant field elevation of 1,041 ft. The month-by-month table above carries the full year.
What is the field elevation of Wynkoop?
1,041 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6G4 (FAA), in Mount Vernon, Ohio.