Boone, Iowa · field elev 1,160 ft
Density Altitude at Boone Municipal (KBNW)
Boone Municipal sits at 1,160 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 3,045 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 | 18.7 | −1,312 ft | 28.2 | −636 ft |
| February | 23.3 | −983 ft | 33.3 | −280 ft |
| March | 35.9 | −100 ft | 46.3 | 609 ft |
| April | 48.4 | 749 ft | 60.0 | 1,515 ft |
| May | 59.7 | 1,495 ft | 71.0 | 2,221 ft |
| June | 69.6 | 2,132 ft | 80.7 | 2,829 ft |
| July | 73.5 | 2,379 ft | 84.2 | 3,045 ft |
| August | 71.5 | 2,253 ft | 82.2 | 2,922 ft |
| September | 63.9 | 1,767 ft | 76.1 | 2,542 ft |
| October | 51.0 | 923 ft | 63.2 | 1,722 ft |
| November | 36.8 | −38 ft | 46.9 | 649 ft |
| December | 24.8 | −876 ft | 33.8 | −245 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 KBNW
DENSITY ALTITUDE
Field elevation 1,160 ft — the air behaves like 3,033 ft.
- PRESSURE ALT
- 1,161 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 Iowa fields
- KAMW — Ames Municipal
Ames · elev 956 ft
- KPRO — Perry Municipal
Perry · elev 1,013 ft
- KEFW — Jefferson Municipal
Jefferson · elev 1,047 ft
- KEBS — Webster City Municipal
Webster City · elev 1,122 ft
- KIKV — Ankeny Regional
Ankeny · elev 910 ft
- 2Y1 — Drake
Radcliffe · elev 1,179 ft
- KDSM — Des Moines International
Des Moines · elev 958 ft
- KFOD — Fort Dodge Regional
Fort Dodge · elev 1,156 ft
Frequently asked questions
How high does density altitude get at KBNW in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Boone Municipal reaches roughly 3,045 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 KBNW on an average day?
It swings with the seasons: from roughly −1,312 ft at the coldest month's average temperature to about 2,379 ft at the warmest month's — all from a constant field elevation of 1,160 ft. The month-by-month table above carries the full year.
What is the field elevation of Boone Municipal?
1,160 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBNW (ICAO) / BNW (FAA), in Boone, Iowa.