Tuscaloosa, Alabama · field elev 170 ft
Density Altitude at Tuscaloosa Ntl (KTCL)
Tuscaloosa Ntl sits at 170 ft, and even a typical July afternoon (94 °F) only lifts density altitude to about 2,414 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 | 46.9 | −579 ft | 57.3 | 116 ft |
| February | 51.0 | −303 ft | 62.2 | 438 ft |
| March | 58.7 | 208 ft | 70.5 | 974 ft |
| April | 65.9 | 678 ft | 78.1 | 1,456 ft |
| May | 73.7 | 1,178 ft | 85.0 | 1,887 ft |
| June | 80.5 | 1,607 ft | 91.0 | 2,256 ft |
| July | 83.3 | 1,781 ft | 93.6 | 2,414 ft |
| August | 82.8 | 1,750 ft | 93.0 | 2,378 ft |
| September | 77.8 | 1,437 ft | 88.4 | 2,096 ft |
| October | 66.9 | 743 ft | 78.5 | 1,481 ft |
| November | 55.8 | 17 ft | 67.3 | 769 ft |
| December | 49.1 | −431 ft | 59.2 | 241 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 KTCL
DENSITY ALTITUDE
Field elevation 170 ft — the air behaves like 2,438 ft.
- PRESSURE ALT
- 171 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 Alabama fields
- 3M8 — North Pickens
Reform · elev 237 ft
- KAIV — George Downer
Aliceville · elev 150 ft
- M95 — Richard Arthur Field
Fayette · elev 357 ft
- 0A8 — Bibb County
Centreville · elev 251 ft
- 7A0 — Greensboro Municipal
Greensboro · elev 175 ft
- KEKY — Bessemer Ntl
Bessemer · elev 700 ft
- KEET — Shelby County
Alabaster · elev 586 ft
- KJFX — Walker County/Bevill Field
Jasper · elev 483 ft
Frequently asked questions
How high does density altitude get at KTCL in summer?
On a typical July afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Tuscaloosa Ntl reaches roughly 2,414 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 KTCL on an average day?
It swings with the seasons: from roughly −579 ft at the coldest month's average temperature to about 1,781 ft at the warmest month's — all from a constant field elevation of 170 ft. The month-by-month table above carries the full year.
What is the field elevation of Tuscaloosa Ntl?
170 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KTCL (ICAO) / TCL (FAA), in Tuscaloosa, Alabama.