Ellijay, Georgia · field elev 1,486 ft
Density Altitude at Gilmer County (49A)
Gilmer County sits at 1,486 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 3,461 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 | 39.3 | 539 ft | 47.5 | 1,093 ft |
| February | 42.7 | 770 ft | 51.7 | 1,372 ft |
| March | 49.9 | 1,253 ft | 59.8 | 1,903 ft |
| April | 57.8 | 1,773 ft | 68.4 | 2,456 ft |
| May | 65.3 | 2,258 ft | 75.2 | 2,885 ft |
| June | 72.4 | 2,709 ft | 81.6 | 3,282 ft |
| July | 75.7 | 2,916 ft | 84.5 | 3,461 ft |
| August | 74.9 | 2,866 ft | 83.6 | 3,406 ft |
| September | 69.8 | 2,545 ft | 78.8 | 3,109 ft |
| October | 59.4 | 1,877 ft | 69.0 | 2,494 ft |
| November | 49.3 | 1,213 ft | 58.7 | 1,832 ft |
| December | 42.8 | 777 ft | 50.8 | 1,313 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 49A
DENSITY ALTITUDE
Field elevation 1,486 ft — the air behaves like 3,491 ft.
- PRESSURE ALT
- 1,487 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
- KJZP — Pickens County
Jasper · elev 1,535 ft
- KDNN — Dalton Municipal
Dalton · elev 709 ft
- KCNI — Cherokee County Regional
Canton · elev 1,220 ft
- KCZL — Tom B David Field
Calhoun · elev 656 ft
- 9A0 — Lumpkin County-Wimpys
Dahlonega · elev 1,329 ft
- KDZJ — Blairsville
Blairsville · elev 1,907 ft
- KVPC — Cartersville
Cartersville · elev 759 ft
- KRMG — Richard B Russell Regional - J H Towers Field
Rome · elev 644 ft
Frequently asked questions
How high does density altitude get at 49A in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Gilmer County reaches roughly 3,461 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 49A on an average day?
It swings with the seasons: from roughly 539 ft at the coldest month's average temperature to about 2,916 ft at the warmest month's — all from a constant field elevation of 1,486 ft. The month-by-month table above carries the full year.
What is the field elevation of Gilmer County?
1,486 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 49A (FAA), in Ellijay, Georgia.