Merritt Island, Florida · field elev 6 ft
Density Altitude at Merritt Island (KCOI)
Merritt Island sits at 6 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,050 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 | 61.4 | 183 ft | 72.2 | 881 ft |
| February | 63.7 | 333 ft | 74.6 | 1,034 ft |
| March | 67.0 | 547 ft | 77.8 | 1,237 ft |
| April | 71.6 | 843 ft | 81.8 | 1,488 ft |
| May | 76.6 | 1,161 ft | 85.9 | 1,742 ft |
| June | 80.4 | 1,400 ft | 89.1 | 1,940 ft |
| July | 81.9 | 1,494 ft | 90.9 | 2,050 ft |
| August | 82.1 | 1,506 ft | 90.7 | 2,038 ft |
| September | 80.7 | 1,419 ft | 88.6 | 1,909 ft |
| October | 76.1 | 1,129 ft | 84.3 | 1,643 ft |
| November | 69.2 | 689 ft | 78.5 | 1,281 ft |
| December | 64.1 | 359 ft | 74.0 | 996 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 KCOI
DENSITY ALTITUDE
Field elevation 6 ft — the air behaves like 2,056 ft.
- PRESSURE ALT
- 7 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
- KTIX — Space Coast Regional
Titusville · elev 34 ft
- KMLB — Melbourne Orlando International
Melbourne · elev 33 ft
- X21 — Arthur Dunn Air Park
Titusville · elev 30 ft
- X59 — Valkaria
Valkaria · elev 26 ft
- X26 — Sebastian Municipal
Sebastian · elev 22 ft
- KMCO — Orlando International
Orlando · elev 96 ft
- KORL — Orlando Exec
Orlando · elev 113 ft
- KSFB — Orlando Sanford International
Orlando · elev 55 ft
Frequently asked questions
How high does density altitude get at KCOI in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Merritt Island reaches roughly 2,050 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 KCOI on an average day?
It swings with the seasons: from roughly 183 ft at the coldest month's average temperature to about 1,506 ft at the warmest month's — all from a constant field elevation of 6 ft. The month-by-month table above carries the full year.
What is the field elevation of Merritt Island?
6 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCOI (ICAO) / COI (FAA), in Merritt Island, Florida.