Fernandina Beach, Florida · field elev 16 ft
Density Altitude at Fernandina Beach Municipal (KFHB)
Fernandina Beach Municipal sits at 16 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 | 54.9 | −233 ft | 64.3 | 385 ft |
| February | 57.6 | −54 ft | 66.6 | 534 ft |
| March | 63.2 | 313 ft | 72.2 | 894 ft |
| April | 68.6 | 663 ft | 77.4 | 1,224 ft |
| May | 75.8 | 1,123 ft | 83.9 | 1,631 ft |
| June | 80.7 | 1,431 ft | 88.3 | 1,903 ft |
| July | 82.8 | 1,562 ft | 90.7 | 2,050 ft |
| August | 82.2 | 1,525 ft | 89.5 | 1,976 ft |
| September | 79.6 | 1,362 ft | 86.0 | 1,761 ft |
| October | 72.7 | 926 ft | 80.1 | 1,393 ft |
| November | 64.3 | 385 ft | 72.4 | 906 ft |
| December | 57.8 | −41 ft | 66.3 | 514 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 KFHB
DENSITY ALTITUDE
Field elevation 16 ft — the air behaves like 2,068 ft.
- PRESSURE ALT
- 17 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
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- KCRG — Jacksonville Exec At Craig
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- 01J — Hilliard Airpark
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- KHEG — Herlong Recreational
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- KVQQ — Cecil
Jacksonville · elev 80 ft
- KSGJ — St Augustine
St Augustine · elev 10 ft
- 42J — Keystone Heights
Keystone Heights · elev 196 ft
- 28J — Palatka Municipal/Lt Kay Larkin Field
Palatka · elev 48 ft
Frequently asked questions
How high does density altitude get at KFHB in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Fernandina Beach Municipal 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 KFHB on an average day?
It swings with the seasons: from roughly −233 ft at the coldest month's average temperature to about 1,562 ft at the warmest month's — all from a constant field elevation of 16 ft. The month-by-month table above carries the full year.
What is the field elevation of Fernandina Beach Municipal?
16 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFHB (ICAO) / FHB (FAA), in Fernandina Beach, Florida.