Monticello, Missouri · field elev 675 ft
Density Altitude at Lewis County Regional (6M6)
Lewis County Regional sits at 675 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,491 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 | 25.3 | −1,448 ft | 33.5 | −871 ft |
| February | 29.5 | −1,151 ft | 38.4 | −532 ft |
| March | 40.4 | −394 ft | 50.4 | 282 ft |
| April | 52.0 | 389 ft | 62.6 | 1,086 ft |
| May | 62.5 | 1,080 ft | 72.0 | 1,690 ft |
| June | 71.9 | 1,683 ft | 81.0 | 2,255 ft |
| July | 75.5 | 1,911 ft | 84.8 | 2,491 ft |
| August | 73.8 | 1,804 ft | 83.4 | 2,404 ft |
| September | 66.4 | 1,332 ft | 77.2 | 2,018 ft |
| October | 54.5 | 555 ft | 65.1 | 1,248 ft |
| November | 41.6 | −312 ft | 51.0 | 323 ft |
| December | 30.7 | −1,067 ft | 38.7 | −511 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 6M6
DENSITY ALTITUDE
Field elevation 675 ft — the air behaves like 2,503 ft.
- PRESSURE ALT
- 676 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 Missouri fields
- 93M — Rueter Airfield
Palmyra · elev 657 ft
- 0H7 — Kahoka Municipal
Kahoka · elev 700 ft
- 6K2 — Shelby County
Shelbyville · elev 760 ft
- KHAE — Hannibal Regional
Hannibal · elev 769 ft
- K52 — Cpt Ben Smith Airfield/Monroe City
Monroe City · elev 737 ft
- 03D — Memphis Meml
Memphis · elev 813 ft
- KIRK — Kirksville Regional
Kirksville · elev 966 ft
- K89 — Macon-Fower Meml
Macon · elev 878 ft
Frequently asked questions
How high does density altitude get at 6M6 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Lewis County Regional reaches roughly 2,491 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 6M6 on an average day?
It swings with the seasons: from roughly −1,448 ft at the coldest month's average temperature to about 1,911 ft at the warmest month's — all from a constant field elevation of 675 ft. The month-by-month table above carries the full year.
What is the field elevation of Lewis County Regional?
675 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 6M6 (FAA), in Monticello, Missouri.