Falls City, Nebraska · field elev 984 ft
Density Altitude at Brenner Field (KFNB)
Brenner Field sits at 984 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 3,070 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 | 26.4 | −983 ft | 36.2 | −298 ft |
| February | 31.2 | −646 ft | 41.5 | 65 ft |
| March | 42.7 | 147 ft | 54.1 | 911 ft |
| April | 53.3 | 858 ft | 65.1 | 1,628 ft |
| May | 64.0 | 1,557 ft | 75.3 | 2,277 ft |
| June | 73.7 | 2,176 ft | 84.7 | 2,861 ft |
| July | 77.2 | 2,396 ft | 88.1 | 3,070 ft |
| August | 75.1 | 2,264 ft | 86.5 | 2,972 ft |
| September | 67.1 | 1,756 ft | 79.7 | 2,552 ft |
| October | 54.8 | 957 ft | 66.9 | 1,744 ft |
| November | 41.2 | 45 ft | 52.1 | 778 ft |
| December | 30.6 | −688 ft | 40.1 | −30 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 KFNB
DENSITY ALTITUDE
Field elevation 984 ft — the air behaves like 3,064 ft.
- PRESSURE ALT
- 985 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 Nebraska fields
- K01 — Farington Field
Auburn · elev 924 ft
- 50K — Pawnee City Municipal
Pawnee City · elev 1,260 ft
- 0G3 — Tecumseh Municipal
Tecumseh · elev 1,306 ft
- KAFK — Nebraska City Municipal
Nebraska City · elev 1,165 ft
- KPMV — Plattsmouth Municipal/Douglas V Duey Field
Plattsmouth · elev 1,204 ft
- KBIE — Beatrice Municipal
Beatrice · elev 1,324 ft
- KCEK — Crete Municipal
Crete · elev 1,500 ft
- KLNK — Lincoln
Lincoln · elev 1,219 ft
Frequently asked questions
How high does density altitude get at KFNB in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Brenner Field reaches roughly 3,070 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 KFNB on an average day?
It swings with the seasons: from roughly −983 ft at the coldest month's average temperature to about 2,396 ft at the warmest month's — all from a constant field elevation of 984 ft. The month-by-month table above carries the full year.
What is the field elevation of Brenner Field?
984 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFNB (ICAO) / FNB (FAA), in Falls City, Nebraska.