Mc Kinnon, Tennessee · field elev 370 ft
Density Altitude at Houston County (M93)
Houston County sits at 370 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,340 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 | 38.1 | −932 ft | 47.0 | −324 ft |
| February | 42.3 | −644 ft | 52.0 | 12 ft |
| March | 50.4 | −95 ft | 61.8 | 658 ft |
| April | 59.3 | 495 ft | 71.5 | 1,284 ft |
| May | 68.0 | 1,060 ft | 78.6 | 1,732 ft |
| June | 75.7 | 1,550 ft | 85.5 | 2,162 ft |
| July | 78.9 | 1,751 ft | 88.4 | 2,340 ft |
| August | 77.8 | 1,682 ft | 88.0 | 2,316 ft |
| September | 71.4 | 1,277 ft | 82.3 | 1,964 ft |
| October | 60.0 | 541 ft | 71.7 | 1,296 ft |
| November | 49.3 | −169 ft | 60.3 | 560 ft |
| December | 40.8 | −746 ft | 49.9 | −129 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 M93
DENSITY ALTITUDE
Field elevation 370 ft — the air behaves like 2,316 ft.
- PRESSURE ALT
- 371 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
- 0M5 — Humphreys County
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- KPHT — Henry County
Paris · elev 580 ft
- M02 — Dickson Municipal
Dickson · elev 892 ft
- KHZD — Sgt Lee Russell Carroll County
Huntingdon · elev 497 ft
- KCKV — Outlaw Field
Clarksville · elev 550 ft
- KGHM — Centerville Municipal
Centerville · elev 765 ft
- KPVE — Beech River Regional
Lexington-Parsons · elev 488 ft
Frequently asked questions
How high does density altitude get at M93 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Houston County reaches roughly 2,340 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 M93 on an average day?
It swings with the seasons: from roughly −932 ft at the coldest month's average temperature to about 1,751 ft at the warmest month's — all from a constant field elevation of 370 ft. The month-by-month table above carries the full year.
What is the field elevation of Houston County?
370 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is M93 (FAA), in Mc Kinnon, Tennessee.