Fostoria, Ohio · field elev 752 ft
Density Altitude at Donald P Miller (KFZI)
Donald P Miller sits at 752 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,529 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 | 26.0 | −1,302 ft | 33.3 | −789 ft |
| February | 28.4 | −1,132 ft | 36.4 | −574 ft |
| March | 37.6 | −491 ft | 46.5 | 116 ft |
| April | 49.4 | 311 ft | 60.0 | 1,012 ft |
| May | 61.0 | 1,077 ft | 71.5 | 1,752 ft |
| June | 70.2 | 1,670 ft | 80.5 | 2,318 ft |
| July | 73.7 | 1,892 ft | 83.9 | 2,529 ft |
| August | 72.1 | 1,790 ft | 82.5 | 2,442 ft |
| September | 65.5 | 1,368 ft | 76.7 | 2,081 ft |
| October | 53.3 | 571 ft | 63.8 | 1,259 ft |
| November | 41.5 | −223 ft | 49.7 | 331 ft |
| December | 31.3 | −928 ft | 38.2 | −449 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 KFZI
DENSITY ALTITUDE
Field elevation 752 ft — the air behaves like 2,535 ft.
- PRESSURE ALT
- 753 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
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Frequently asked questions
How high does density altitude get at KFZI in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Donald P Miller reaches roughly 2,529 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 KFZI on an average day?
It swings with the seasons: from roughly −1,302 ft at the coldest month's average temperature to about 1,892 ft at the warmest month's — all from a constant field elevation of 752 ft. The month-by-month table above carries the full year.
What is the field elevation of Donald P Miller?
752 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFZI (ICAO) / FZI (FAA), in Fostoria, Ohio.