Clifton, Tennessee · field elev 407 ft
Density Altitude at Hassell Field (M29)
Hassell Field sits at 407 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,538 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 | 39.4 | −796 ft | 50.4 | −50 ft |
| February | 43.1 | −543 ft | 54.8 | 244 ft |
| March | 51.3 | 11 ft | 64.0 | 847 ft |
| April | 60.1 | 593 ft | 73.5 | 1,456 ft |
| May | 68.7 | 1,150 ft | 80.7 | 1,909 ft |
| June | 76.2 | 1,627 ft | 87.3 | 2,318 ft |
| July | 79.9 | 1,859 ft | 90.9 | 2,538 ft |
| August | 78.9 | 1,797 ft | 90.6 | 2,520 ft |
| September | 72.3 | 1,380 ft | 85.1 | 2,182 ft |
| October | 61.0 | 652 ft | 75.2 | 1,564 ft |
| November | 49.9 | −83 ft | 63.1 | 788 ft |
| December | 42.1 | −611 ft | 53.2 | 137 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 M29
DENSITY ALTITUDE
Field elevation 407 ft — the air behaves like 2,544 ft.
- PRESSURE ALT
- 408 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
- M15 — James Tucker
Linden · elev 740 ft
- KSNH — Savannah-Hardin County
Savannah · elev 473 ft
- KPVE — Beech River Regional
Lexington-Parsons · elev 488 ft
- 0M3 — Paul Bridges Field
Hohenwald · elev 972 ft
- KSZY — Robert Sibley
Selmer · elev 610 ft
- 2M2 — Lawrenceburg/Lawrence County (Fleeman Field)
Lawrenceburg · elev 937 ft
- KGHM — Centerville Municipal
Centerville · elev 765 ft
- 0M4 — Benton County
Camden · elev 468 ft
Frequently asked questions
How high does density altitude get at M29 in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Hassell Field reaches roughly 2,538 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 M29 on an average day?
It swings with the seasons: from roughly −796 ft at the coldest month's average temperature to about 1,859 ft at the warmest month's — all from a constant field elevation of 407 ft. The month-by-month table above carries the full year.
What is the field elevation of Hassell Field?
407 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is M29 (FAA), in Clifton, Tennessee.