Smyrna, Tennessee · field elev 543 ft
Density Altitude at Smyrna (KMQY)
Smyrna sits at 543 ft, and even a typical August afternoon (90 °F) only lifts density altitude to about 2,649 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 | 37.3 | −772 ft | 48.1 | −35 ft |
| February | 40.5 | −552 ft | 52.3 | 246 ft |
| March | 48.2 | −29 ft | 61.3 | 839 ft |
| April | 57.5 | 590 ft | 71.3 | 1,483 ft |
| May | 65.9 | 1,137 ft | 79.0 | 1,969 ft |
| June | 73.8 | 1,642 ft | 86.2 | 2,416 ft |
| July | 77.7 | 1,888 ft | 89.7 | 2,630 ft |
| August | 77.0 | 1,844 ft | 90.0 | 2,649 ft |
| September | 70.5 | 1,432 ft | 84.6 | 2,317 ft |
| October | 58.6 | 662 ft | 73.3 | 1,610 ft |
| November | 47.1 | −103 ft | 60.8 | 806 ft |
| December | 40.5 | −552 ft | 51.5 | 192 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 KMQY
DENSITY ALTITUDE
Field elevation 543 ft — the air behaves like 2,649 ft.
- PRESSURE ALT
- 544 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
- KBNA — Nashville International
Nashville · elev 599 ft
- KMBT — Murfreesboro Municipal
Murfreesboro · elev 614 ft
- M54 — Lebanon Municipal
Lebanon · elev 588 ft
- KJWN — John C Tune
Nashville · elev 501 ft
- KXNX — Music City Exec
Gallatin · elev 583 ft
- KSYI — Bomar Field/Shelbyville Municipal
Shelbyville · elev 800 ft
- KLUG — Ellington
Lewisburg · elev 718 ft
- 0A3 — Smithville Municipal
Smithville · elev 1,084 ft
Frequently asked questions
How high does density altitude get at KMQY in summer?
On a typical August afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Smyrna reaches roughly 2,649 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 KMQY on an average day?
It swings with the seasons: from roughly −772 ft at the coldest month's average temperature to about 1,888 ft at the warmest month's — all from a constant field elevation of 543 ft. The month-by-month table above carries the full year.
What is the field elevation of Smyrna?
543 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMQY (ICAO) / MQY (FAA), in Smyrna, Tennessee.