Middle Bass Island, Ohio · field elev 579 ft
Density Altitude at Middle Bass Island (3T7)
Middle Bass Island sits at 579 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,219 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 | −1,370 ft | 34.4 | −928 ft |
| February | 30.2 | −1,222 ft | 37.0 | −748 ft |
| March | 38.0 | −679 ft | 45.0 | −200 ft |
| April | 49.3 | 90 ft | 57.3 | 621 ft |
| May | 60.8 | 851 ft | 68.5 | 1,349 ft |
| June | 70.8 | 1,496 ft | 78.1 | 1,957 ft |
| July | 74.7 | 1,743 ft | 82.3 | 2,219 ft |
| August | 73.2 | 1,648 ft | 80.5 | 2,107 ft |
| September | 66.7 | 1,233 ft | 74.5 | 1,730 ft |
| October | 55.3 | 489 ft | 63.0 | 994 ft |
| November | 43.5 | −302 ft | 50.1 | 143 ft |
| December | 33.6 | −984 ft | 39.3 | −589 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 3T7
DENSITY ALTITUDE
Field elevation 579 ft — the air behaves like 2,200 ft.
- PRESSURE ALT
- 580 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
- 3W9 — Middle Bass-East Point
Middle Bass Island · elev 582 ft
- 3X5 — North Bass Island
North Bass Island · elev 594 ft
- 3W2 — Put In Bay
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 3T7 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Middle Bass Island reaches roughly 2,219 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 3T7 on an average day?
It swings with the seasons: from roughly −1,370 ft at the coldest month's average temperature to about 1,743 ft at the warmest month's — all from a constant field elevation of 579 ft. The month-by-month table above carries the full year.
What is the field elevation of Middle Bass Island?
579 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3T7 (FAA), in Middle Bass Island, Ohio.