Keosauqua, Iowa · field elev 580 ft
Density Altitude at Keosauqua Municipal (6K9)
Keosauqua Municipal sits at 580 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,443 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 | 22.9 | −1,739 ft | 32.0 | −1,094 ft |
| February | 26.9 | −1,454 ft | 36.8 | −760 ft |
| March | 39.3 | −588 ft | 50.1 | 145 ft |
| April | 51.1 | 212 ft | 62.9 | 989 ft |
| May | 61.7 | 911 ft | 72.7 | 1,618 ft |
| June | 71.1 | 1,516 ft | 81.8 | 2,189 ft |
| July | 75.2 | 1,776 ft | 85.9 | 2,443 ft |
| August | 73.4 | 1,662 ft | 84.5 | 2,356 ft |
| September | 65.3 | 1,144 ft | 77.5 | 1,920 ft |
| October | 53.1 | 345 ft | 64.6 | 1,099 ft |
| November | 39.3 | −588 ft | 49.4 | 98 ft |
| December | 28.3 | −1,355 ft | 36.9 | −753 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 6K9
DENSITY ALTITUDE
Field elevation 580 ft — the air behaves like 2,449 ft.
- PRESSURE ALT
- 581 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
- KFFL — Fairfield Municipal
Fairfield · elev 801 ft
- 4K6 — Bloomfield Municipal
Bloomfield · elev 888 ft
- KMPZ — Mount Pleasant Municipal
Mount Pleasant · elev 731 ft
- KFSW — Fort Madison Municipal
Fort Madison · elev 722 ft
- KEOK — Keokuk Municipal
Keokuk · elev 672 ft
- KOTM — Ottumwa Regional
Ottumwa · elev 846 ft
- KAWG — Washington Municipal
Washington · elev 754 ft
- KBRL — Southeast Iowa Regional
Burlington · elev 699 ft
Frequently asked questions
How high does density altitude get at 6K9 in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Keosauqua Municipal reaches roughly 2,443 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 6K9 on an average day?
It swings with the seasons: from roughly −1,739 ft at the coldest month's average temperature to about 1,776 ft at the warmest month's — all from a constant field elevation of 580 ft. The month-by-month table above carries the full year.
What is the field elevation of Keosauqua Municipal?
580 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6K9 (FAA), in Keosauqua, Iowa.