Williamsburg, Virginia · field elev 49 ft
Density Altitude at Waltrip Williamsburg Exec Airport (KJGG)
Waltrip Williamsburg Exec Airport sits at 49 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 1,955 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 | 39.8 | −1,215 ft | 49.1 | −581 ft |
| February | 42.2 | −1,050 ft | 52.3 | −366 ft |
| March | 49.1 | −581 ft | 59.8 | 131 ft |
| April | 58.9 | 72 ft | 70.0 | 793 ft |
| May | 67.1 | 607 ft | 77.2 | 1,251 ft |
| June | 74.9 | 1,106 ft | 84.4 | 1,702 ft |
| July | 79.3 | 1,384 ft | 88.5 | 1,955 ft |
| August | 77.6 | 1,277 ft | 86.5 | 1,832 ft |
| September | 71.8 | 909 ft | 80.5 | 1,459 ft |
| October | 61.1 | 217 ft | 71.0 | 858 ft |
| November | 51.0 | −453 ft | 61.1 | 217 ft |
| December | 43.4 | −968 ft | 52.6 | −346 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 KJGG
DENSITY ALTITUDE
Field elevation 49 ft — the air behaves like 1,986 ft.
- PRESSURE ALT
- 50 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 Virginia fields
- KPHF — Newport News/Williamsburg International
Newport News · elev 42 ft
- KFYJ — Middle Peninsula Regional
West Point · elev 20 ft
- KAKQ — Wakefield Municipal
Wakefield · elev 111 ft
- W96 — New Kent County
Quinton · elev 121 ft
- W75 — Hummel Field
Saluda · elev 30 ft
- KPVG — Hampton Roads Exec
Norfolk · elev 28 ft
- KORF — Norfolk International
Norfolk · elev 26 ft
- KRIC — Richmond International
Richmond · elev 168 ft
Frequently asked questions
How high does density altitude get at KJGG in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Waltrip Williamsburg Exec Airport reaches roughly 1,955 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 KJGG on an average day?
It swings with the seasons: from roughly −1,215 ft at the coldest month's average temperature to about 1,384 ft at the warmest month's — all from a constant field elevation of 49 ft. The month-by-month table above carries the full year.
What is the field elevation of Waltrip Williamsburg Exec Airport?
49 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJGG (ICAO) / JGG (FAA), in Williamsburg, Virginia.