Lawrenceville, Georgia · field elev 1,062 ft
Density Altitude at Gwinnett County/Briscoe Field (KLZU)
Gwinnett County/Briscoe Field sits at 1,062 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 3,244 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 | 43.1 | 271 ft | 53.9 | 994 ft |
| February | 46.4 | 494 ft | 57.5 | 1,231 ft |
| March | 53.0 | 934 ft | 66.0 | 1,782 ft |
| April | 60.2 | 1,407 ft | 73.6 | 2,265 ft |
| May | 68.3 | 1,929 ft | 80.5 | 2,697 ft |
| June | 75.4 | 2,379 ft | 86.7 | 3,079 ft |
| July | 78.6 | 2,579 ft | 89.4 | 3,244 ft |
| August | 78.0 | 2,541 ft | 88.6 | 3,195 ft |
| September | 72.3 | 2,183 ft | 83.0 | 2,852 ft |
| October | 62.3 | 1,543 ft | 73.6 | 2,265 ft |
| November | 52.3 | 888 ft | 63.8 | 1,640 ft |
| December | 45.4 | 426 ft | 55.4 | 1,093 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 KLZU
DENSITY ALTITUDE
Field elevation 1,062 ft — the air behaves like 3,219 ft.
- PRESSURE ALT
- 1,063 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
- D73 — Cy Nunnally Meml
Monroe · elev 875 ft
- KPDK — Dekalb-Peachtree
Atlanta · elev 998 ft
- KGVL — Lee Gilmer Meml
Gainesville · elev 1,277 ft
- KCVC — Covington Municipal
Atlanta · elev 820 ft
- KJCA — Jackson County
Jefferson · elev 951 ft
- KFTY — Fulton County Exec/Charlie Brown Field
Atlanta · elev 841 ft
- KCNI — Cherokee County Regional
Canton · elev 1,220 ft
Frequently asked questions
How high does density altitude get at KLZU in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Gwinnett County/Briscoe Field reaches roughly 3,244 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 KLZU on an average day?
It swings with the seasons: from roughly 271 ft at the coldest month's average temperature to about 2,579 ft at the warmest month's — all from a constant field elevation of 1,062 ft. The month-by-month table above carries the full year.
What is the field elevation of Gwinnett County/Briscoe Field?
1,062 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KLZU (ICAO) / LZU (FAA), in Lawrenceville, Georgia.