Cross City, Florida · field elev 42 ft
Density Altitude at Cross City (KCTY)
Cross City sits at 42 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,082 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 | 52.7 | −348 ft | 65.9 | 521 ft |
| February | 56.3 | −108 ft | 69.6 | 759 ft |
| March | 61.4 | 228 ft | 75.2 | 1,116 ft |
| April | 66.8 | 579 ft | 80.2 | 1,431 ft |
| May | 74.0 | 1,040 ft | 86.7 | 1,836 ft |
| June | 79.2 | 1,369 ft | 89.6 | 2,014 ft |
| July | 81.1 | 1,488 ft | 90.7 | 2,082 ft |
| August | 81.2 | 1,494 ft | 90.6 | 2,075 ft |
| September | 78.5 | 1,325 ft | 88.3 | 1,934 ft |
| October | 70.6 | 823 ft | 82.4 | 1,569 ft |
| November | 61.1 | 208 ft | 73.9 | 1,034 ft |
| December | 55.7 | −148 ft | 68.5 | 688 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 KCTY
DENSITY ALTITUDE
Field elevation 42 ft — the air behaves like 2,100 ft.
- PRESSURE ALT
- 43 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
- 6J8 — Oak Tree Landing
High Springs · elev 90 ft
- KCDK — George T Lewis
Cedar Key · elev 11 ft
- 0J8 — Flying Ten
Archer · elev 92 ft
- KFPY — Perry-Foley
Perry · elev 44 ft
- X60 — Williston Regional
Williston · elev 76 ft
- 24J — Suwannee County
Live Oak · elev 103 ft
- KLCQ — Lake City Gateway
Lake City · elev 201 ft
- KGNV — Gainesville Regional
Gainesville · elev 151 ft
Frequently asked questions
How high does density altitude get at KCTY in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Cross City reaches roughly 2,082 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 KCTY on an average day?
It swings with the seasons: from roughly −348 ft at the coldest month's average temperature to about 1,494 ft at the warmest month's — all from a constant field elevation of 42 ft. The month-by-month table above carries the full year.
What is the field elevation of Cross City?
42 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KCTY (ICAO) / CTY (FAA), in Cross City, Florida.