Palatka, Florida · field elev 48 ft
Density Altitude at Palatka Municipal/Lt Kay Larkin Field (28J)
Palatka Municipal/Lt Kay Larkin Field sits at 48 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 2,046 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 | 55.8 | −134 ft | 64.5 | 437 ft |
| February | 59.1 | 84 ft | 68.2 | 677 ft |
| March | 63.8 | 392 ft | 73.8 | 1,035 ft |
| April | 69.5 | 760 ft | 79.6 | 1,401 ft |
| May | 75.3 | 1,130 ft | 85.3 | 1,756 ft |
| June | 79.6 | 1,401 ft | 88.3 | 1,942 ft |
| July | 81.4 | 1,514 ft | 90.0 | 2,046 ft |
| August | 81.1 | 1,495 ft | 89.1 | 1,991 ft |
| September | 78.5 | 1,332 ft | 85.6 | 1,775 ft |
| October | 72.5 | 952 ft | 80.0 | 1,426 ft |
| November | 64.6 | 444 ft | 72.7 | 965 ft |
| December | 58.7 | 58 ft | 67.0 | 599 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 28J
DENSITY ALTITUDE
Field elevation 48 ft — the air behaves like 2,046 ft.
- PRESSURE ALT
- 49 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
- 42J — Keystone Heights
Keystone Heights · elev 196 ft
- KSGJ — St Augustine
St Augustine · elev 10 ft
- 2J8 — Pierson Municipal
Pierson · elev 63 ft
- KFIN — Flagler Exec
Palm Coast · elev 33 ft
- KGNV — Gainesville Regional
Gainesville · elev 151 ft
- KVQQ — Cecil
Jacksonville · elev 80 ft
- KOMN — Ormond Beach Municipal
Ormond Beach · elev 28 ft
- KHEG — Herlong Recreational
Jacksonville · elev 86 ft
Frequently asked questions
How high does density altitude get at 28J in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Palatka Municipal/Lt Kay Larkin Field reaches roughly 2,046 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 28J on an average day?
It swings with the seasons: from roughly −134 ft at the coldest month's average temperature to about 1,514 ft at the warmest month's — all from a constant field elevation of 48 ft. The month-by-month table above carries the full year.
What is the field elevation of Palatka Municipal/Lt Kay Larkin Field?
48 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 28J (FAA), in Palatka, Florida.