Marion, Ohio · field elev 993 ft
Density Altitude at Marion Municipal (KMNN)
Marion Municipal sits at 993 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,804 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 | −951 ft | 34.3 | −418 ft |
| February | 29.3 | −767 ft | 37.4 | −204 ft |
| March | 38.5 | −129 ft | 47.9 | 509 ft |
| April | 50.0 | 650 ft | 61.3 | 1,393 ft |
| May | 61.1 | 1,380 ft | 72.1 | 2,086 ft |
| June | 69.9 | 1,946 ft | 80.2 | 2,594 ft |
| July | 73.0 | 2,143 ft | 83.6 | 2,804 ft |
| August | 71.1 | 2,023 ft | 81.8 | 2,693 ft |
| September | 64.4 | 1,594 ft | 75.9 | 2,325 ft |
| October | 53.1 | 856 ft | 63.7 | 1,549 ft |
| November | 41.3 | 63 ft | 50.0 | 650 ft |
| December | 31.7 | −599 ft | 38.8 | −108 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 KMNN
DENSITY ALTITUDE
Field elevation 993 ft — the air behaves like 2,829 ft.
- PRESSURE ALT
- 994 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
- 17G — Port Bucyrus/Crawford County
Bucyrus · elev 1,008 ft
- 4I9 — Morrow County
Mount Gilead · elev 1,086 ft
- 5E9 — Packer
Radnor · elev 918 ft
- KGQQ — Galion Municipal
Galion · elev 1,224 ft
- 56D — Wyandot County
Upper Sandusky · elev 830 ft
- KDLZ — Delaware Municipal/Jim Moore Field
Delaware · elev 945 ft
- 12G — Shelby Community
Shelby · elev 1,120 ft
- 6CM — Chapman Meml Field
Centerburg · elev 1,180 ft
Frequently asked questions
How high does density altitude get at KMNN in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Marion Municipal reaches roughly 2,804 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 KMNN on an average day?
It swings with the seasons: from roughly −951 ft at the coldest month's average temperature to about 2,143 ft at the warmest month's — all from a constant field elevation of 993 ft. The month-by-month table above carries the full year.
What is the field elevation of Marion Municipal?
993 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMNN (ICAO) / MNN (FAA), in Marion, Ohio.