Jefferson, Georgia · field elev 951 ft
Density Altitude at Jackson County (KJCA)
Jackson County sits at 951 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 3,090 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 | 41.8 | 45 ft | 52.7 | 777 ft |
| February | 45.1 | 268 ft | 56.4 | 1,021 ft |
| March | 52.2 | 744 ft | 64.5 | 1,549 ft |
| April | 60.1 | 1,264 ft | 72.9 | 2,085 ft |
| May | 68.1 | 1,780 ft | 79.8 | 2,518 ft |
| June | 75.7 | 2,261 ft | 86.4 | 2,925 ft |
| July | 79.0 | 2,468 ft | 89.1 | 3,090 ft |
| August | 78.1 | 2,412 ft | 88.4 | 3,048 ft |
| September | 72.2 | 2,041 ft | 82.9 | 2,710 ft |
| October | 61.4 | 1,348 ft | 73.4 | 2,117 ft |
| November | 51.4 | 691 ft | 63.7 | 1,497 ft |
| December | 44.3 | 214 ft | 55.3 | 949 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 KJCA
DENSITY ALTITUDE
Field elevation 951 ft — the air behaves like 3,084 ft.
- PRESSURE ALT
- 952 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 Georgia fields
- KWDR — Barrow County
Winder · elev 934 ft
- KGVL — Lee Gilmer Meml
Gainesville · elev 1,277 ft
- KAHN — Athens/Ben Epps
Athens · elev 812 ft
- KAJR — Habersham County
Cornelia · elev 1,448 ft
- KLZU — Gwinnett County/Briscoe Field
Lawrenceville · elev 1,062 ft
- 18A — Franklin-Hart
Canon · elev 890 ft
- D73 — Cy Nunnally Meml
Monroe · elev 875 ft
- KTOC — Toccoa Rg Letourneau Field
Toccoa · elev 996 ft
Frequently asked questions
How high does density altitude get at KJCA in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Jackson County reaches roughly 3,090 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 KJCA on an average day?
It swings with the seasons: from roughly 45 ft at the coldest month's average temperature to about 2,468 ft at the warmest month's — all from a constant field elevation of 951 ft. The month-by-month table above carries the full year.
What is the field elevation of Jackson County?
951 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJCA (ICAO) / JCA (FAA), in Jefferson, Georgia.