Mount Gilead, Ohio · field elev 1,086 ft
Density Altitude at Morrow County (4I9)
Morrow County sits at 1,086 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,918 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 | 26.7 | −834 ft | 34.3 | −303 ft |
| February | 29.3 | −651 ft | 37.4 | −89 ft |
| March | 38.5 | −13 ft | 47.9 | 624 ft |
| April | 50.0 | 765 ft | 61.3 | 1,508 ft |
| May | 61.1 | 1,495 ft | 72.1 | 2,200 ft |
| June | 69.9 | 2,060 ft | 80.2 | 2,708 ft |
| July | 73.0 | 2,257 ft | 83.6 | 2,918 ft |
| August | 71.1 | 2,137 ft | 81.8 | 2,807 ft |
| September | 64.4 | 1,708 ft | 75.9 | 2,439 ft |
| October | 53.1 | 971 ft | 63.7 | 1,663 ft |
| November | 41.3 | 178 ft | 50.0 | 765 ft |
| December | 31.7 | −483 ft | 38.8 | 8 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 4I9
DENSITY ALTITUDE
Field elevation 1,086 ft — the air behaves like 2,943 ft.
- PRESSURE ALT
- 1,087 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
- KMNN — Marion Municipal
Marion · elev 993 ft
- 6CM — Chapman Meml Field
Centerburg · elev 1,180 ft
- KGQQ — Galion Municipal
Galion · elev 1,224 ft
- 17G — Port Bucyrus/Crawford County
Bucyrus · elev 1,008 ft
- 5E9 — Packer
Radnor · elev 918 ft
- 6G4 — Wynkoop
Mount Vernon · elev 1,041 ft
- 4I3 — Knox County
Mount Vernon · elev 1,192 ft
- KDLZ — Delaware Municipal/Jim Moore Field
Delaware · elev 945 ft
Frequently asked questions
How high does density altitude get at 4I9 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Morrow County reaches roughly 2,918 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 4I9 on an average day?
It swings with the seasons: from roughly −834 ft at the coldest month's average temperature to about 2,257 ft at the warmest month's — all from a constant field elevation of 1,086 ft. The month-by-month table above carries the full year.
What is the field elevation of Morrow County?
1,086 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4I9 (FAA), in Mount Gilead, Ohio.