Athens, Tennessee · field elev 874 ft
Density Altitude at Mcminn County (KMMI)
Mcminn County sits at 874 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,954 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 | 38.4 | −284 ft | 48.6 | 408 ft |
| February | 41.9 | −44 ft | 53.0 | 702 ft |
| March | 49.5 | 469 ft | 61.7 | 1,273 ft |
| April | 58.3 | 1,051 ft | 71.3 | 1,889 ft |
| May | 66.8 | 1,602 ft | 78.8 | 2,361 ft |
| June | 74.4 | 2,085 ft | 85.4 | 2,770 ft |
| July | 77.9 | 2,305 ft | 88.4 | 2,954 ft |
| August | 77.2 | 2,261 ft | 88.1 | 2,936 ft |
| September | 71.5 | 1,902 ft | 83.1 | 2,628 ft |
| October | 59.9 | 1,156 ft | 72.6 | 1,972 ft |
| November | 48.6 | 408 ft | 60.9 | 1,221 ft |
| December | 41.5 | −72 ft | 51.6 | 609 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 KMMI
DENSITY ALTITUDE
Field elevation 874 ft — the air behaves like 2,930 ft.
- PRESSURE ALT
- 875 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 Tennessee fields
- KMNV — Monroe County
Madisonville · elev 1,031 ft
- KRZR — Cleveland Regional Jetport
Cleveland · elev 866 ft
- 2A0 — Mark Anton
Dayton · elev 718 ft
- 1A3 — Martin Campbell Field
Copperhill · elev 1,789 ft
- KFGU — Collegedale Municipal
Collegedale · elev 860 ft
- KRKW — Rockwood Municipal
Rockwood · elev 1,664 ft
- KTYS — Mc Ghee Tyson
Knoxville · elev 986 ft
- KCHA — Lovell Field
Chattanooga · elev 683 ft
Frequently asked questions
How high does density altitude get at KMMI in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Mcminn County reaches roughly 2,954 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 KMMI on an average day?
It swings with the seasons: from roughly −284 ft at the coldest month's average temperature to about 2,305 ft at the warmest month's — all from a constant field elevation of 874 ft. The month-by-month table above carries the full year.
What is the field elevation of Mcminn County?
874 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMMI (ICAO) / MMI (FAA), in Athens, Tennessee.