Georgetown, Ohio · field elev 958 ft
Density Altitude at Brown County (KGEO)
Brown County sits at 958 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,897 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 | 28.3 | −882 ft | 39.5 | −104 ft |
| February | 31.8 | −636 ft | 43.5 | 169 ft |
| March | 40.1 | −63 ft | 53.2 | 819 ft |
| April | 51.2 | 686 ft | 65.6 | 1,628 ft |
| May | 61.4 | 1,357 ft | 74.6 | 2,201 ft |
| June | 69.5 | 1,878 ft | 82.5 | 2,694 ft |
| July | 73.1 | 2,106 ft | 85.8 | 2,897 ft |
| August | 71.6 | 2,011 ft | 85.3 | 2,866 ft |
| September | 64.6 | 1,564 ft | 79.4 | 2,501 ft |
| October | 53.1 | 812 ft | 67.3 | 1,737 ft |
| November | 42.1 | 74 ft | 53.9 | 865 ft |
| December | 32.6 | −580 ft | 43.8 | 189 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 KGEO
DENSITY ALTITUDE
Field elevation 958 ft — the air behaves like 2,909 ft.
- PRESSURE ALT
- 959 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
- KAMT — Alexander Salamon
West Union · elev 896 ft
- I69 — Clermont County
Batavia · elev 844 ft
- KHOC — Highland County
Hillsboro · elev 977 ft
- KLUK — Cincinnati Municipal/Lunken Field
Cincinnati · elev 482 ft
- KILN — Wilmington Air Park
Wilmington · elev 1,077 ft
- 2B6 — Hollister Field
Wilmington · elev 1,090 ft
- I66 — Clinton Field
Wilmington · elev 1,033 ft
- I68 — Warren County/John Lane Field
Lebanon · elev 898 ft
Frequently asked questions
How high does density altitude get at KGEO in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Brown County reaches roughly 2,897 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 KGEO on an average day?
It swings with the seasons: from roughly −882 ft at the coldest month's average temperature to about 2,106 ft at the warmest month's — all from a constant field elevation of 958 ft. The month-by-month table above carries the full year.
What is the field elevation of Brown County?
958 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGEO (ICAO) / GEO (FAA), in Georgetown, Ohio.