Jacksonville, Florida · field elev 80 ft
Density Altitude at Cecil (KVQQ)
Cecil sits at 80 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,189 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 | 53.7 | −234 ft | 66.4 | 600 ft |
| February | 57.0 | −15 ft | 69.9 | 825 ft |
| March | 61.6 | 288 ft | 75.6 | 1,188 ft |
| April | 67.4 | 664 ft | 80.9 | 1,522 ft |
| May | 73.8 | 1,074 ft | 86.4 | 1,864 ft |
| June | 79.4 | 1,428 ft | 90.0 | 2,085 ft |
| July | 81.6 | 1,566 ft | 91.7 | 2,189 ft |
| August | 81.5 | 1,559 ft | 91.1 | 2,152 ft |
| September | 78.5 | 1,371 ft | 88.3 | 1,981 ft |
| October | 70.3 | 851 ft | 81.6 | 1,566 ft |
| November | 61.4 | 274 ft | 73.7 | 1,068 ft |
| December | 56.4 | −55 ft | 68.4 | 729 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 KVQQ
DENSITY ALTITUDE
Field elevation 80 ft — the air behaves like 2,207 ft.
- PRESSURE ALT
- 81 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
- KHEG — Herlong Recreational
Jacksonville · elev 86 ft
- KJAX — Jacksonville International
Jacksonville · elev 30 ft
- KCRG — Jacksonville Exec At Craig
Jacksonville · elev 41 ft
- 42J — Keystone Heights
Keystone Heights · elev 196 ft
- 01J — Hilliard Airpark
Hilliard · elev 59 ft
- KSGJ — St Augustine
St Augustine · elev 10 ft
- KFHB — Fernandina Beach Municipal
Fernandina Beach · elev 16 ft
- 28J — Palatka Municipal/Lt Kay Larkin Field
Palatka · elev 48 ft
Frequently asked questions
How high does density altitude get at KVQQ in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Cecil reaches roughly 2,189 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 KVQQ on an average day?
It swings with the seasons: from roughly −234 ft at the coldest month's average temperature to about 1,566 ft at the warmest month's — all from a constant field elevation of 80 ft. The month-by-month table above carries the full year.
What is the field elevation of Cecil?
80 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KVQQ (ICAO) / VQQ (FAA), in Jacksonville, Florida.