Knoxville, Tennessee · field elev 833 ft
Density Altitude at Knoxville Downtown Island (KDKX)
Knoxville Downtown Island sits at 833 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,898 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 | 37.1 | −424 ft | 47.9 | 311 ft |
| February | 40.9 | −163 ft | 52.5 | 618 ft |
| March | 48.5 | 351 ft | 61.3 | 1,196 ft |
| April | 57.3 | 935 ft | 70.8 | 1,807 ft |
| May | 66.1 | 1,507 ft | 78.5 | 2,293 ft |
| June | 73.7 | 1,991 ft | 85.5 | 2,726 ft |
| July | 77.2 | 2,211 ft | 88.3 | 2,898 ft |
| August | 76.4 | 2,161 ft | 87.9 | 2,874 ft |
| September | 70.8 | 1,807 ft | 82.9 | 2,566 ft |
| October | 59.0 | 1,046 ft | 72.3 | 1,902 ft |
| November | 47.6 | 291 ft | 60.6 | 1,151 ft |
| December | 40.4 | −198 ft | 51.1 | 525 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 KDKX
DENSITY ALTITUDE
Field elevation 833 ft — the air behaves like 2,880 ft.
- PRESSURE ALT
- 834 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
- KTYS — Mc Ghee Tyson
Knoxville · elev 986 ft
- KGKT — Gatlinburg-Pigeon Forge
Sevierville · elev 1,014 ft
- KJAU — Colonel Tommy C Stiner Airfield
Jacksboro · elev 1,180 ft
- KMOR — Moore-Murrell
Morristown · elev 1,313 ft
- 3A2 — The New Tazewell/Wayne Coffey Municipal
Tazewell · elev 1,179 ft
- KMNV — Monroe County
Madisonville · elev 1,031 ft
- KRKW — Rockwood Municipal
Rockwood · elev 1,664 ft
- KSCX — Scott Municipal
Oneida · elev 1,545 ft
Frequently asked questions
How high does density altitude get at KDKX in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Knoxville Downtown Island reaches roughly 2,898 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 KDKX on an average day?
It swings with the seasons: from roughly −424 ft at the coldest month's average temperature to about 2,211 ft at the warmest month's — all from a constant field elevation of 833 ft. The month-by-month table above carries the full year.
What is the field elevation of Knoxville Downtown Island?
833 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KDKX (ICAO) / DKX (FAA), in Knoxville, Tennessee.