Copperhill, Tennessee · field elev 1,789 ft
Density Altitude at Martin Campbell Field (1A3)
Martin Campbell Field sits at 1,789 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 3,958 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 | 37.5 | 793 ft | 49.8 | 1,621 ft |
| February | 40.8 | 1,018 ft | 53.5 | 1,865 ft |
| March | 47.7 | 1,482 ft | 61.6 | 2,393 ft |
| April | 56.0 | 2,029 ft | 70.8 | 2,979 ft |
| May | 64.1 | 2,553 ft | 77.5 | 3,399 ft |
| June | 71.3 | 3,011 ft | 83.5 | 3,769 ft |
| July | 74.9 | 3,237 ft | 86.6 | 3,958 ft |
| August | 74.2 | 3,193 ft | 86.0 | 3,921 ft |
| September | 68.6 | 2,840 ft | 81.3 | 3,633 ft |
| October | 57.5 | 2,127 ft | 71.8 | 3,042 ft |
| November | 47.1 | 1,442 ft | 61.4 | 2,380 ft |
| December | 40.5 | 997 ft | 52.7 | 1,813 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 1A3
DENSITY ALTITUDE
Field elevation 1,789 ft — the air behaves like 3,982 ft.
- PRESSURE ALT
- 1,790 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
- KRZR — Cleveland Regional Jetport
Cleveland · elev 866 ft
- KMMI — Mcminn County
Athens · elev 874 ft
- KMNV — Monroe County
Madisonville · elev 1,031 ft
- KFGU — Collegedale Municipal
Collegedale · elev 860 ft
- 2A0 — Mark Anton
Dayton · elev 718 ft
- KCHA — Lovell Field
Chattanooga · elev 683 ft
- KTYS — Mc Ghee Tyson
Knoxville · elev 986 ft
- KRKW — Rockwood Municipal
Rockwood · elev 1,664 ft
Frequently asked questions
How high does density altitude get at 1A3 in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Martin Campbell Field reaches roughly 3,958 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 1A3 on an average day?
It swings with the seasons: from roughly 793 ft at the coldest month's average temperature to about 3,237 ft at the warmest month's — all from a constant field elevation of 1,789 ft. The month-by-month table above carries the full year.
What is the field elevation of Martin Campbell Field?
1,789 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1A3 (FAA), in Copperhill, Tennessee.