Cedar Key, Florida · field elev 11 ft
Density Altitude at George T Lewis (KCDK)
George T Lewis sits at 11 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 1,964 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 | 55.3 | −213 ft | 66.4 | 515 ft |
| February | 58.5 | −1 ft | 69.7 | 728 ft |
| March | 63.0 | 294 ft | 74.9 | 1,059 ft |
| April | 68.4 | 644 ft | 80.3 | 1,400 ft |
| May | 74.5 | 1,034 ft | 86.1 | 1,761 ft |
| June | 79.3 | 1,337 ft | 88.7 | 1,921 ft |
| July | 80.7 | 1,425 ft | 89.4 | 1,964 ft |
| August | 80.8 | 1,431 ft | 89.0 | 1,940 ft |
| September | 78.5 | 1,287 ft | 86.9 | 1,810 ft |
| October | 71.5 | 843 ft | 81.4 | 1,469 ft |
| November | 62.7 | 274 ft | 73.6 | 977 ft |
| December | 57.4 | −74 ft | 68.2 | 631 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 KCDK
DENSITY ALTITUDE
Field elevation 11 ft — the air behaves like 1,940 ft.
- PRESSURE ALT
- 12 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 Florida fields
- KCGC — Crystal River/Davis Field
Crystal River · elev 9 ft
- KCTY — Cross City
Cross City · elev 42 ft
- X60 — Williston Regional
Williston · elev 76 ft
- X35 — Marion County
Dunnellon · elev 65 ft
- 6J8 — Oak Tree Landing
High Springs · elev 90 ft
- 0J8 — Flying Ten
Archer · elev 92 ft
- KINF — Inverness
Inverness · elev 65 ft
- KOCF — Ocala International-Jim Taylor Field
Ocala · elev 90 ft
Frequently asked questions
How high does density altitude get at KCDK in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at George T Lewis reaches roughly 1,964 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 KCDK on an average day?
It swings with the seasons: from roughly −213 ft at the coldest month's average temperature to about 1,431 ft at the warmest month's — all from a constant field elevation of 11 ft. The month-by-month table above carries the full year.
What is the field elevation of George T Lewis?
11 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCDK (ICAO) / CDK (FAA), in Cedar Key, Florida.