Middle Bass Island, Ohio · field elev 582 ft
Density Altitude at Middle Bass-East Point (3W9)
Middle Bass-East Point sits at 582 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,222 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 | 28.1 | −1,366 ft | 34.4 | −924 ft |
| February | 30.2 | −1,218 ft | 37.0 | −744 ft |
| March | 38.0 | −675 ft | 45.0 | −196 ft |
| April | 49.3 | 94 ft | 57.3 | 625 ft |
| May | 60.8 | 854 ft | 68.5 | 1,352 ft |
| June | 70.8 | 1,499 ft | 78.1 | 1,961 ft |
| July | 74.7 | 1,747 ft | 82.3 | 2,222 ft |
| August | 73.2 | 1,652 ft | 80.5 | 2,111 ft |
| September | 66.7 | 1,237 ft | 74.5 | 1,734 ft |
| October | 55.3 | 493 ft | 63.0 | 998 ft |
| November | 43.5 | −298 ft | 50.1 | 147 ft |
| December | 33.6 | −980 ft | 39.3 | −585 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 3W9
DENSITY ALTITUDE
Field elevation 582 ft — the air behaves like 2,204 ft.
- PRESSURE ALT
- 583 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
- 3T7 — Middle Bass Island
Middle Bass Island · elev 579 ft
- 3X5 — North Bass Island
North Bass Island · elev 594 ft
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Put In Bay · elev 595 ft
- 89D — Kelleys Island Land Field
Kelleys Island · elev 598 ft
- KPCW — Erie-Ottawa International
Port Clinton · elev 590 ft
- 88D — Hinde
Huron · elev 609 ft
- S24 — Sandusky County Regional
Fremont · elev 665 ft
- 14G — Fremont
Fremont · elev 663 ft
Frequently asked questions
How high does density altitude get at 3W9 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Middle Bass-East Point reaches roughly 2,222 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 3W9 on an average day?
It swings with the seasons: from roughly −1,366 ft at the coldest month's average temperature to about 1,747 ft at the warmest month's — all from a constant field elevation of 582 ft. The month-by-month table above carries the full year.
What is the field elevation of Middle Bass-East Point?
582 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3W9 (FAA), in Middle Bass Island, Ohio.