Macon, Missouri · field elev 878 ft
Density Altitude at Macon-Fower Meml (K89)
Macon-Fower Meml sits at 878 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,904 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 | 27.1 | −1,066 ft | 35.3 | −493 ft |
| February | 32.1 | −715 ft | 41.0 | −101 ft |
| March | 42.9 | 29 ft | 52.7 | 687 ft |
| April | 53.8 | 760 ft | 64.2 | 1,440 ft |
| May | 64.4 | 1,452 ft | 74.1 | 2,071 ft |
| June | 73.6 | 2,040 ft | 83.3 | 2,646 ft |
| July | 77.8 | 2,304 ft | 87.5 | 2,904 ft |
| August | 76.0 | 2,191 ft | 86.3 | 2,830 ft |
| September | 68.1 | 1,690 ft | 79.1 | 2,385 ft |
| October | 56.1 | 912 ft | 66.8 | 1,607 ft |
| November | 43.1 | 42 ft | 52.2 | 654 ft |
| December | 32.1 | −715 ft | 40.2 | −155 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 K89
DENSITY ALTITUDE
Field elevation 878 ft — the air behaves like 2,934 ft.
- PRESSURE ALT
- 879 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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Monroe City · elev 737 ft
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Frequently asked questions
How high does density altitude get at K89 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Macon-Fower Meml reaches roughly 2,904 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 K89 on an average day?
It swings with the seasons: from roughly −1,066 ft at the coldest month's average temperature to about 2,304 ft at the warmest month's — all from a constant field elevation of 878 ft. The month-by-month table above carries the full year.
What is the field elevation of Macon-Fower Meml?
878 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is K89 (FAA), in Macon, Missouri.